(sin A + cosec A)^2 + (cos A + sec A)^2 = 7 + tanA + cot A
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Answer:
Step-by-step explanation:
Sin^2A +2 sina cosecA + cosec ^2A+cos^2A+ 2 cosAsecA + sec^2A
=1+2+2+cosec^2A+ sec^2A
=5+1+ cot^2a+1+ tan^2A
=the answer
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