Mathematics
Prove that sin A+cos A/sin A-cos A +sin A-cos A/sin A+cos A=2 / sin^2 A - cos^2 A = 2/1-2cos^2 A= 2sec^2 A/tan^2 A-1
Related Questions
Prove the following identities, where the angles involved are acute angles for which the trigonometric ratios are defined:
(sec A - cosec A)(1 + tan A + cot A) = tan A sec A - cot A cosec A.
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.
If cot θ + cos θ = m and cot θ - cos θ = n, then prove that (m2 - n2)2 = 16 mn.