prove the identities
e) tan (π/4 + θ) - tan (π/4-θ) = 2tan2θ
f) 2sin2 (π/2-θ) = 1-sin(2θ)
Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.
Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!