Question

Factor each of the following.

a) sin^2θ-cos^2θ

b) tan^2θ-cot^2θ

c) sec^2a-1

Answer 1

\(\huge a^2-b^2=(a+b)(a-b)\)

Answer 2

another hint... \[\cos (2 \theta) = \cos^2 \theta - \sin ^2 \theta\]

Answer 3

but i guess that's too trig

Answer 4

..

Answer 5

LOL