Ex. (5) Show that sec x + tan x =(1+ sin xVisinx – InterviewSolution

1.

Ex. (5) Show that sec x + tan x =(1+ sin xVisinx

Answer»

(1+sin x)/√(1-sin x) × √(1+sin x) /√(1+sin x)

= (1+ sin x )/√(1-sin²x) = (1+ sin x )/cos x

= ( 1/cos x +sin x/cos x ) = ( sec x + tan x ).

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