The trigonometric identities values are;
i. sin (A – B) = -0.15
ii. cos (A – B) = 0.5368
iii. tan (A + B) = -3.536
How to solve trigonometric Identity?
We are given;
cos A = 0.42
sin B = 0.73
Since cos A = 0.42 , then sin A = 0.58
Since sin B = 0.73, then cos B = 0.27
i) sin (A – B)
By trigonometric identities, we know that;
sin (A – B) = sinA cos B - cosA sinB
Thus;
sin (A – B) = (0.58 * 0.27) - (0.42 * 0.73)
sin (A – B) = -0.15
ii) cos (A – B)
By trigonometric identities, we know that;
cos (A – B) = cosA cosB + sinA sinB
cos (A – B) = (0.42 * 0.27) + (0.58 * 0.73)
cos (A – B) = 0.5368
iii) tan (A + B)
By trigonometric identities, we know that;
(tan A + tan B)/(1 - tanAtanB)
tan A = sinA/cosA = 0.58/0.42 = 1.389
tan B = sinB/cosB = 0.73/0.58 = 1.259
Thus;
tan (A + B) = (1.389 + 1.259)/(1 - (1.389 * 1.259))
tan (A + B) = -3.536
Read more about Trigonometric identity at; https://brainly.com/question/7331447
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match it to its definitions !
•ILL GIVE BRAINLIEST !! & 100 POINTS
Answer:
1) D ; 2) E ; 3) B ; 4) C ; 5) A
Step-by-step explanation:
Answer:
1. Corresponding = D
2. Alt Interior = E
3. Vertical = B
4. Alt Ext = C
5. Straight = A
What is the slope of a line parallel to the line whose equation is 9x+3y=-27
Fully simplify your answer.
Answer:
One example would be y = -3x
Step-by-step explanation:
We can more easily find a line parallel to the given equation if it is put in slope intercept form.
3y = -27 - 9x
y = -3x - 9
So the slope is -3. You can choose any line also with a slope of -3.
(ANSWER IN 2 MINUTES AND I SWEAR I'LL GIVE YOU BRAINLY!!!!!!!!!!!!!)
Analyze the following statements and indicate which one best describes the difference between the population and the sample.
A) The sample is all members of a specified group while the population is part of a sample used to describe the whole group
B) In Statistics, the terms population and sample are synonymous with one another and can be used interchangeably
C) The population is all members of a formal organization while the sample is the members of the organization that volunteer to participate in the study
D) The population is all members of a specified group while the sample is the part of a population used to describe the whole group
Use a net of the square puritans if Jessica ty to find the surface area of pyramid 8 and 8
Answer:
Step-by-step explanation:
Hhff
what's a rational number between 13 and 21
Answer:
21
Step-by-step explanation:
ASAP
a golden bar has a mass of 12.5kg. the density of gold is 19.3 g/cm^3. work out the volume of the gold bar. give your answer to correct 3 sf.
Answer:
647.668 cm³
Step-by-step explanation:
12.5 kg = 12500 g
12500 g/19.3 g/cm³ = 647.668 cm³
Simplify.
Remove all perfect squares from inside the square root. Assume x is positive.
√ 20x^8
Can someone help me with this?
Answer:
do you still need help?
Step-by-step explanation:
HELP PLEASE In which table does y vary directly with x
Answer:
x y
1 3
2 6
3 9
Step-by-step explanation:
That's the answer for Plato correct!
-x+4=-9 help me please
Answer:
-13 = x
Step-by-step explanation:
:))
Answer: x = 13
Step-by-step explanation:
First subtract -4 on both sides because your adding by 4
-x + 4 = -9
- 4 -4
The 4 - 4 cancels out
So, -9 - 4 is -13
Then we change the sign because we cannot leave x negative.
-x = -13
x = 13
The diameter of a circle is 10 ft. Find its area to the nearest tenth.
Answer:
15.70
Step-by-step explanation:
Answer:
78.5
Step-by-step explanation:
Formula: a = πr², r = d/2
Given: π = 3.14, d = 10
Sub: a = (3.14)r²
Find r.
r = 10/2
r = 5
Sub: a = (3.14)5²
Simplify: a = (3.14)25
Solve: a = 78.5
The answer is 78.5.
If this truly helped you, help me out by thanking me.
-Xax.
Can u please give me the real answer I really need help☹️
Answer:
12,000 g = 12000000 kg
120 cm = 1200 mm
1.2 L = 1200 L
1200 cm = 12 m
0.12 m = 120 mm
Help with this please
Answer:
its 77 degrees
Step-by-step explanation:
the angles altogether are 180 so you subtract 61 and 42 and get 77
Can you help me with this work please?
9514 1404 393
Answer:
OL = 7
Step-by-step explanation:
Triangle JKL is isosceles and N is the midpoint of JL, so NL = NJ = 14.
Triangle LMN is isosceles and O is the midpoint of NL, so NL = 2(OL).
OL = NL/2 = 14/2
OL = 7
__
There is no WY.
help is appreciated as soon as possible, look at the photo!
Please help me with this!
Answer:
Step-by-step explanation:
Its going to be a negative
negative, if wrong so sorry
Solve for x using
cross multiplication.
4x - 4
4x - 4
7
x + 3
x = [?]
Answer:
x = 29
Step-by-step explanation:
Multiply both sides by 7:
[tex]4x-4=\frac{7x+21}{2}[/tex]
Multiply both sides by 2:
[tex]8x-8 = 7x+21[/tex]
Subtract 7x from both sides:
[tex]x-8=21[/tex]
Add 8 to both sides
[tex]x=29[/tex]
What is the average weight of the kittens in the shelter?
Pls help
Answer:
0.41
Step-by-step explanation:
0.25 0.375 0.5 0.625
Question 5 (1 point)
If y varies jointly as x and z and y = 18 when x = 2 and z = 3, find y when x is 5 and z is 6.
Answer:
y = 90
Step-by-step explanation:
If y varies jointly as x and z, then;
y = kxz
If y = 18 when x = 2 and z = 3
18 = k(2)(3)
18 = 6k
k = 18/6
k = 3
To get y when x = 5 and z = 6
y = kxz
y = 3(5)(6)
y = 15*6
y = 90
Hence the value of y is 90
Select the value of x that makes the equation “16 = -4(x - 1) + 4” true?
• -2
• 2
• -4
• 4
Answer:
[tex] - 4(x - 1) = 16 \\ = > - 4x + 4 - 16 = 0 \\ = > - 4x - 12 = 0 \\ = > - 4x = 12 \\ = > x = - 3[/tex]
If you multiply four times the sum of my number and 2,
you get 28. What's my number?
Answer:
5
Step-by-step explanation:
5+2 = 7
7x4 = 28
The midpoint AB is M (1,1). If the coordinates of A are (-3,-3), what are the coordinates of B
Answer:
(2,−4).
Step-by-step explanation:
Hope this helps and have a wonderful day!!!!
A. 16
B. 14
C. 18
D. 24
11x-6=7x+10 please help i need this bad for my grade
Answer:
x = 4
Step-by-step explanation:
Answer:
x=4
Step-by-step explanation:
Step 1: Subtract 7x from both sides.
11x−6−7x=7x+10−7x
4x−6=10
Step 2: Add 6 to both sides.
4x−6+6=10+6
4x=16
Then you divide both sides by 4
and get x=4
Hope it helps :)
What is the area of the right angle
Answer:
3.84 inches squared
Step-by-step explanation:
The area of a triangle is given by the formula:
Area = 1/2 * base * height
In this problem, our side lengths are:
Base = 2.4 inches
Height = 3.2 inches
So, our area can be found:
Area = 1/2 * 2.4 * 3.2 = 3.84 inches squared
Please help I’ll mark you as brainliest if correct
Answer:
B
Step-by-step explanation:
Pleaseeeeeee helpppppppppppppppp
Answer:
itz A
Step-by-step explanation:
Love you hun;)
rewrite the following 7(3+5=___+___
Answer:
21+35
Step-by-step explanation:
use distributive property, multiply 7 by the two numbers in the parenthesis
keep the problem though.
solve for x please show work... i will give you brainliest
Answer:
82°
Step-by-step explanation:
total wine of quadrilateral=360°
130+ 46+ 102 +x =360
x=360- 278
x=82°
find the value for x
Answer:
X = 6°
Step-by-step explanation:
In a set of parallel lines, the opposite angles and corresponding angles are similar. Since the opposite angle of 110° is the corresponding angle of 19x - 4, you can conclude that 19x - 4 = 110° ⇒ 19x = 114° ⇒ x = 6°.