Question

Prove that (1 + tan’A) (1 + sin A) (1 - sin A) = 1.​

Answer 1

Step-by-step explanation:

LHS=

(1+ tan^2A)(1+sinA)(1-sinA)

=sec^2A(1-sin^2A)

=sec^2A×Cos^2A

=1/cos^2A×cos^2A

=1=RHS[prooved]

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