Which of the following is the least? sin 3      (b)  sin 2        (c) sin 1            (d) sin 7

which of the following is correct?(a) sin1^@>sin1 (b) sin1

Find the principal values of the following (i) sin^(-1) (sin 1) (ii) sin^(-1) (sin 2) (iii) sin^(-1) (sin 10) (iv) sin^(-1) (sin 20) (v) sin^(-1) (sin 100) (vi) sin^(-1) (sin. (29 pi)/(5))

Which of the following quantities is/are positive? (a) "cos"(tan^(-1)(t a n4)) (b) "sin"(cot^(-1)(cot4)) "tan"(cos^(-1)(cos5)) (d) "cot"(sin^(-1)(sin4))

Which of the following functions is not periodie? (a) |sin3x|+sin^2x (b) cossqrt(x)+cos^2x (c) cos4x+tan^2x (d) cos2x+sinx

If sin^2theta_1+sin^2theta_2+sin^2theta_3=0, then which of the following is not the possible value of costheta_1+costheta_2+costheta_3? (a) 3 (b) -3 (c) -1 (d) -2

If A+B+C=pi/2 prove the following (i) sin 2A+sin 2B +sin 2C=4 cos A cos B cos C (ii) cos 2A +cos 2B+cos 2C=1+4 sin A sin B sin C.

If A + B + C = 2s, then prove that sin (s - A) sin (s - B) + sin s. sin (s - C) = sin A sin B .

Prove that sin ( A + B) sin (A - B) = sin^(2) A - sin^(2)B .