Question

if x = a sec A cos B, y = b sec A sin B, z = c tan A, prove that : x^2/a^2 + y^2/b^2- z^2/c^2 = 1.​

Answer 1

Step-by-step explanation:

if x = a sec A cos B, y = b sec A sin B, z = c tan A, prove that : x^2/a^2 + y^2/b^2- z^2/c^2 = 1.