ECAT Mathematics Chapter 16 online mcq test with answers for chapter 16 (Solution of Trigonometric Equation)

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Sr.#	Question	Answer
1		A. B. C. D.
2	cotθ= sin 2θifθ=	A. B. C. D.
3	The number of values of x in the interval [0, 5π] satisfying the equation 3 sin²x - 7 sinx + 2 = 0 is	A. 0 B. 5 C. 6 D. 10
4	cotθ= sin 2θifθ=	A. B. C. D.
5		A. B. C. D. both a & c
6		A. B. C. D.
7	The solution set of the equation 4 cos²x - 3 + 0 is	A. B. C. D. none of these
8		A. B. C. D.
9		A. B. C. D.
10		A. 1 B. 2 C. 3 D. None of these
11	The general solution of tan 3x = 1 is	A. B. C. D.
12	For Cosine Rule of any triangle ABC, b²is equal to	A. a²- c²+ 2ab cos A B. a³+ c³- 3ab cos A C. a²+ c²- 2ac cos B D. a²- c²4bc cos A
13	General solution of 1 + cos x = 0 is	A. B. C. D.
14		A. B. C. D. none of these
15	Sine rule for a triangle states that	A. a/sin A = b/sin B = c/sin C B. sin A/a = sin B/b = sin C/c C. a/sin A + b/sin B + c/sin C D. 2a/sin A = 2b/sin B = 2c/sin C
16		A. A finite non-empty set B. Null set C. Both a and b D. None of these
17	The general value ofθsatisfying the equation 2 sin²θ- 3 sinθ-2 = 0 is	A. B. C. D.
18	Considering Cosine Rule of any triangle ABC, possible measures of angle A includes	A. Angle A is obtuse B. Angle A is acute C. Angle A is right-angle D. All of above
19	If sin (πcosθ) = cos (πsinθ), then which of the following is correct?	A. B. C. D.
20		A. 7 B. 5 C. 6 D. None of these
21		A. B. C. D. none of these
22	If Sin A = sin B, cos A = cos B, then the value of A in terms of B is	A. B. C. D.
23		A. B. C. D.
24	By expressing cos 113° in terms of trigonometrical ratios, answer will be	A. − cos 76° = -0.7093 B. − cos 65° = -0.4258 C. − cos 67° = -0.3907 D. − cos 62° = -0.8520
25		A. B. C. D. none of these
26		A. trigonometric equation B. conditional equation C. identity D. None