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cot^2A+1/cot^2A=

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cot^2A+1/cot^2A=

    • Posted by Priyesh Arora 3 years, 2 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Priyesh Arora 3 years, 2 months ago

    cotA + 1/cotA = 1 on Squaring both side (cotA +1/cotA)^2 =(1)^2 cot^2A+ 1/cot^2A+2×cotA×1/cotA=1 cot^2A+1/cot^2A= 2-1 cot^2A+1/cot^2A =-1

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