Prove that: (sin A + cosec A)^2 + (cos A + sec A)^2 = 7 + tan^2A + cot^2A

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asked Mar 13, 2018 in Mathematics by shabnam praween (19,050 points) 5 6 8

Prove that: (sin A + cosec A)2 + (cos A + sec A)2 = 7 + tan2A + cot2A

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answered Mar 13, 2018 by mdsamim (213,225 points) 5 10 15
selected Mar 15, 2018 by faiz
 
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The correct answer is

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