Question

If
$\sinθ\ + sin^{2}θ + \sin ^{3} θ = 1$
then prove that
$\cos ^{6}θ - 4cos^{4} θ+ 8 \cos^{2} θ = 4$
​

Answer 1

Answer:

4cos" (and any subsequent words) was ignored because we limit queries to 32 words.