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Tantheta/1-cottheta + cottheta/1-tantheta = 1 + …

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Tantheta/1-cottheta + cottheta/1-tantheta = 1 + secthetacosectheta

    • Posted by Swapnil Kamble 1 year, 9 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Puja Rani 1 year, 9 months ago

    LHS- tan A 1- cot A 1- tan A so A tan A(tan A-1) (tan A-1) (tan2 A+tan A+1) tan A(tan A-1) + + + + cot A 1 tan A 1- tan A 1 tan A(1- tan A) 1 1-. 1 tan A tan A tan A-1 tan A tan2 A tan A-1 tan A(1- tan A) tan³ A-1 tan² A+tan A+1 tan A =tan A+ 1+ cot A sin A cos A cos A + +1 sin A sin² A+cos² A sin A cos A 1 +1 +1 sin A cos A = sec A cosec A+ 1 =RHS [a3- b3- (a- b) (a2+ab+b²)]

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