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7. If cosec theta - cot …

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7. If cosec theta - cot theta = 2/3 then value of cosec 0 is:

    • Posted by Shashant Joon 1 year, 11 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    B 01 Rojalin Behera 1 year, 11 months ago

    1+cot2 theta =cosec2 theta 1=cosec2 theta - cot2 theta 1=(cosec theta - cot theta)(cosec theta+cot theta) 1=2/3(cosec theta+ cot theta) 3/2=cosec theta+ cot theta ....(1) 2/3=cosec theta - cot theta....(2) Add equation (1) and (2) (Cosec theta+ cot theta)+(cosec theta - cot theta)=(3/2)+(2/3) 2cosec theta=13/6 . . .cosec theta=13/12

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