Question

answer me fast
kl meri exam hai

Answer 1

Answer:

Hey Mate,

The relation

(sin x + cosec x)^2 + (cos x + sec x)^2 = 7 + tan^2 x + cot^2x

has to be proved.

Start with the LHS:

(sin x + cosec x)^2 + (cos x + sec x)^2

◆=> sin^2 X + cosec^2X + 2×sinX × cosecX + cos^2X + sec^2X + 2×cosX × secX

◆=> 1 + cosec^2x + 2 + sec^2x + 2

◆=> 1 + 1 + cot^2x + 2 + 1 + tan^2x + 2

◆=> 7 + cot^2x + tan^2x

●This proves that (sin x + cosec x)^2 + (cos x + sec x)^2 = 7 + tan^2 x + cot^2x

Thank-you

☺

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Answer 2

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