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Exercise 2.1 question number 11,12

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Exercise 2.1 question number 11,12

    • Posted by Mansi Vasava 6 years, 4 months ago

    CBSE > Class 12 > Mathematics
    • 3 answers

    Dolly ?️ 6 years, 4 months ago

    Q 12 ) Cos^-1(1/2) + 2(pi/2-cos^-1(1/2)) Cos^-1(1/2) + pi - 2cos^-1(1/2) Pi-cos^-1(1/2) Pi - pi/3 2pi/3

    0Thank You

    Siddharth Chaudhary 6 years, 4 months ago

    Q-12) cos-1(1/2)+2sin-1(1/2) Ans- =Cos-1×cosπ/3+sin-1×sinπ/6 =π/3+2×π/6 =2π/3

    0Thank You

    Siddharth Chaudhary 6 years, 4 months ago

    Q-11) Tan-1(1)+cos-1(-1/2)+sin-1(-1/2) Ans~ =Tan-1×π/4+ cos-1×-cosπ/3 + Sin-1×-sinπ/6 =π/4+ cos-1{cos(π-π/3)}+ sin-1{sin(-π/6)} =π/4+2π/3-π/6 =3π/4

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