Prove that cot(theta)+tan(theta)=cosec (theta)×sec (theta)
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tan x + cot x = sec x csc x
LHS = sin x / cos x + cos x / sin x
= (sin^2 x + cos^2 x)/(sin x cos x)
= 1/(sin x * cos x)
= sec x csc x = RHS
LHS = sin x / cos x + cos x / sin x
= (sin^2 x + cos^2 x)/(sin x cos x)
= 1/(sin x * cos x)
= sec x csc x = RHS
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