Math Class 12

12th Math chapter 2 objective in english

Inverse Trigonometric Functions Objective

If sin-1(x2 – 7x + 12) = nπ, n I, then x =

(a) -2

(b) 4

(c) -3

(d) 5

Ans (b)

If 6sin-1 (x2 – 6x + 8.5) = π, then x is equal to

(a) 1

(b) 2

(c) 3

(d) 8

Ans (b)

sin-1 (1 – x) – 2sin-1 x = π/2

(a) 0

(b) ½

(c) 0, ½

(d) -1/2

Ans (b)

2tan-1(cos x) = tan-1(2cosec x)

(a) 0

(b) π/3

(c) π/4

(d) π/2

Ans (b)

The value of sin (2tan-1 (0.75)) is equal to

(a) 0.75

(b) 1.5

(c) 0.96

(d) sin 1.5

Ans (b)

Find the value of sec2 (tan-1 2) + cosec2 (cot-1 3)

(a) 12

(b) 5

(c) 15

(d) 9

Ans (b)

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