Answer:
The proof is given below.
Step-by-step explanation:
Given: ( the correct question and ans is as follow )
sin (x + y) = 3sin ( x - y)
To Prove
tan x = 2 tan y
Proof:

Using the identities

we get

Now we will take sin x . cos y to the left hand side and cos x . sin y to the right hand side,we get

Equal angles are congruent angles.
Answer:
A = 3228.2854
I = 1228.2854
Step-by-step explanation:
1 . Use the CI formula. (Reference in file.)
2. Solve equation after plugging the given information we have.
3. We will have the Amount after solving the equation.
4. To find interest we use formula A=P+I
Source - TutorEye
Answer: he worked 31 hours and he earned $317.75
hope this helps :) and if it doesn’t I’m rlly sorry