Mathematics
If cot θ + cos θ = m and cot θ - cos θ = n, then prove that (m2 - n2)2 = 16 mn.
Related Questions
Prove the following identities, where the angles involved are acute angles for which the trigonometric ratios are defined:
2(sin6 θ + cos6 θ) - 3(sin4 θ + cos4 θ) + 1 = 0.
When 0° < θ < 90°, solve the following equation:
2 cos2 θ + sin θ - 2 = 0
When 0° < θ < 90°, solve the following equation:
3 cos θ = 2 sin2 θ