Math, asked by venkatswamy080, 1 year ago

prove that(sinA+cosecA) +(cosA+secA) =7+tanA+cotA

Answers

Answered by sandy1816

7

Step-by-step explanation:

(sinA+cosecA)²+(cosA+secA)²

=sin²A+cosec²A+2sinAcosecA + cos²A+sec²A+2cosAsecA

=(sin²A+cos²A)+1+cot²A+2+2+1+tan²A

=1+1+2+2+tan²A+cot²A

=7+tan²A+cot²A

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