Question

1+2 cos theta 20° express in product form
plzz hlp my test are going on​

Answer 1

Answer:

1 + 2cos theta = 1 + 2(2cos^2 theta/2 - 1) =

1 + 4cos^2theta/2 - 2 =

4cos^2theta/2 - 1 =

(2cos theta/2 + 1)(2cos theta/2 - 1) Ans

Answer 2

Answer:

this is the answer for you