Math, asked by RUPANKAJ1951, 10 months ago

Prove that (cosa/1+sina)+(1+sina/cos a)is equal to 2 sec a

Answers

Answered by sandy1816

3

Step-by-step explanation:

cosa/1+sina + 1+sina/cosa

=cos²a+(1+sina)²/cosa(1+sina)

=cos²a+1+2sina+sin²a/cosa(1+sina)

=2+2sina/cosa(1+sina)

=2(1+sina)/cosa(1+sina)

=2/cosa

=2seca

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