Question

PLEASE HELP!
Find all solutions to the equation.

7 sin2x - 14 sin x + 2 = -5

Answer 1

first break it down to pieces. What do you think is the first step?

Answer 2

add 2 to the other side?

Answer 3

subtract 2 mean

Answer 4

good now go with your order of operations

Answer 5

i know this sounds stupid but idk what to do next

Answer 6

is that sin^2 x (square x) or sin(2x) ?

Answer 7

sin^2 x

Answer 8

well then its a simple quadratic eqn in sinx

let sinx =y
make that substitution , then solve for y using quadratic formula or any legit method..
since you know y then you can easily calculate x

Answer 9

i am confused

Answer 10

use sinx=x then u'll have
7*x^2-14x+7=0
then u'll get answer x=1
sinx=1 nd x=sin^(-1)1