Math, asked by sumathip2016, 9 months ago

(Cos43 / cos47 )2 - cos37 . Cosec53 / tan25. tan45 . tan65

Answers

Answered by rohittojo

2

Answer:

Cot^2 - 1.

Step-by-step explanation:

The answer:

Cos43÷Cos47=Cos43÷Sin43

=Cot43

Cos37.Cosec53=Sin53.(1/Sin53)

=1

tan25.tan45.tan65=tan25.1.tan65

=tan25.Cot25

=tan25.(1/tan25)

=1

So,

Cot43^2-1/1

=Cot43^2-1.

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