Math, asked by sangitanegi9568, 11 months ago

( 1+ tan a + sec a) (1 + cot a - cosec a )

Answers

Answered by sandy1816

1

Step-by-step explanation:

(1+tanA+secA)(1+cotA-cosecA)

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

=(cosA+sinA)²-1/sinAcosA

=cos²A+sin²A+2sinAcosA-1/sinAcosA

=2

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