Use a half-angle identity to find the exact value of cos 15

It's too short. Write at least 20 characters to explain it well.

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo