Math, asked by sikdarmanjuri, 11 months ago

SecA (I- sin A) (secA+ tan A) = 1

Answers

Answered by lahabrahman

6

Answer:

LHS=

=1/cosA(1-sinA) (1/cosA+sinA/cosa)

=1/cosA(1-sinA) (1+sinA/cosA)

=(1-sin²A) (1/cos²A)

=Cos²A/cos²A = 1 = RHS

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