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kogti [31]
3 years ago
15

PLEASE HELP Trig Idenities

Mathematics
1 answer:
kari74 [83]3 years ago
4 0
\dfrac{\sin(A+B)}{\sin(A-B)}=\dfrac{\sin A\cos B+\cos A\sin B}{\sin A\cos B-\cos A\sin B}

Divide through all terms by \cos A\cos B. Then, for instance, the first term in the numerator becomes

\dfrac{\sin A\cos B}{\cos A\cos B}=\dfrac{\sin A}{\cos A}=\tan A

All other terms reduce similarly, giving the final product

\dfrac{\tan A+\tan B}{\tan A-\tan B}
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A punch recipe requires 3/5 of a cup of pineapple juice for ever 2 1/2 cups of soda. what is the unit rate of soda to pineapple
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3 years ago
Find the exact value of sin2π/3.
victus00 [196]

Answer:

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Find m A. 10 B. 5 C.√53 D. 10√3/3
MArishka [77]

Answer:

m = 10

Step-by-step explanation:

Looking at the angles, we can see that this is a 30-60-90 triangle.

The side that is with the 30° angle and the 90° angle is represented by x\sqrt{3}.

So let's find x.

x\sqrt{3} = 5\sqrt{3}

Divide both sides by \sqrt{3}:

x = 5.

Now the hypotenuse is always 2x (the leg with the 90° and 60° is just x.) So,

2x = 2\cdot5 = 10.

Hope this helped!

7 0
3 years ago
Alina has to spend $30 000 on expenses each year. If that amount of money is 40% of her total yearly earnings, then how much mon
BaLLatris [955]

Answer:

$75000

Step-by-step explanation:

Given data

Let her yearly earnings be x

so

40% of x= $30000

40/100*x=30000

0.4x=30000

x=30000/0.4

=$75000

Hence the total amount made per years is

$75000

6 0
3 years ago
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