Homework Sections 63 64 Homework Trigonometry Fall 2017 Sc

Homework: Sections 6.3 & 6.4 Homework Trigonometry - Fall 2017 Score: 0 of 1 pt 8.6.7 If sin %, 0

Solution

sin theta=3/8

cos theta=sqrt(1 -sin²theta)= sqrt(1- 9/64) =sqrt(55)/8

sin 2 theta=2 sin theta cos theta =2(3/8)sqrt55/8)= 3sqrt55/32

cos 2 theta=cos²theta-sin²theta = 55/64 -9/64=23/32

sin theta/2=sqrt(1-costheta)/2) =sqrt(8-sqrt55)/4

cos theta/2 =sqrt(8+sqrt55)/2