Question

use a half angle formula to find the exact value of each expression
tan 7pi/8

Answer 1

@aum

Answer 2

\[\large \sin^2{x}=\frac{ 1-\cos2x }{ 2 }\]
\[\large \cos^2{x}=\frac{1+\cos2x}{2}\]

Answer 3

i got it thanks

Answer 4

Alright