1/sect-1 +1/sect+1=2cot t csc t

Question

this is a prove the identity problem.

Answer 1

Given

Cross multiplication

Therefore 1/ ( sec t - 1 ) + 1 / ( sect + 1 ) = 2 * csc t * cot t.

Comments

Typo mistake in 3rd line of solution.

It's not cross multiplication.

It's a least common multiple of two fractions.