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2sin-¹4/5 + sin-¹24/25 Options (π,-π,0)

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2sin-¹4/5 + sin-¹24/25 Options (π,-π,0)

    • Posted by Sayeed Khan 5 years, 6 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Nishihoney Lodha 5 years, 6 months ago

    Let sin^-¹ 4/5=A and sin^-¹ 24/25=B then, sinA=4/5 and sinB=24/25, tan A=4/3 and tanB=24/7......so, the new ques. is 2tan-¹4/3+tan-¹24/7.....apply formula of 2tan-¹ A and then tan-¹A+tan-¹B.....the answer will be tan-¹(tan0)=0

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