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(Sin A+cosecA2)+(cosA+SecA2)2=7+tan2A+cot2A |
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Answer» Sin²a +cosec²a +2sinacoseca +cos²a +sec²a +2cos sec =1+2+2+cosec²+sec² =5+1+cot² +1+tan²=7+cot²+tan² Proved |
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