Find here the Most Important NCERT chapter-wise Multiple Choice Questions from Class 10 Maths with Answers Pdf free download. this may assist you to understand and check your knowledge about the chapters Most Important MCQ. Students also can take a free test of the Multiple Choice Questions of The chapters Most Important MCQ. Each question has four options followed by the right answer. These Most Important MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

## Q1. sin 2B = 2 sin B is true when B is equal to

(a) 90°

(b) 60°

(c) 30°

(d) 0°

(d) 0°

## Q2. Out of the following options, the two angles that are together cassified as complementary angles are

(a) 120° and 60°

(b) 50° and 30°

(c) 65° and 25°

(d) 70° and 30°

(c) 65° and 25°

## Q3. If sin θ – cos θ = 0, vthen the value of θ is

(a) 90°

(b) 30°

(c) 45°

(d) 60°

(c) 45°

## Q4. If tan 2A = cot (A – 18°), then the value of A is

(a) 24°

(b) 18°

(c) 27°

(d) 36°

(d) 36°

## Q5. If x and y are complementary angles, then

(a) sin x = sin y

(b) tan x = tan y

(c) cos x = cos y

(d) sec x = cosec y

(d) sec x = cosec y

## Q6. sin (45° + θ) – cos (45° – θ) is equal to

(a) 2 cos ?

(b) 0

(c) 2 sin ?

(d) 1

(b) 0

## Q7. If 0° < θ < 90°, then sec 0 is

(a) >1

(b) < 1

(c) =1

(d) 0

(a) >1

## Q8. In right triangle ABC, right angled at C, if tan A = 1, then the value of 2 sin A cos A is

(a) 0

(b) 1

(c) – 1

(d) 2

(b) 1

## Q9. The value of cos θ cos(90° – θ) – sin θ sin (90° – θ ) is:

(a) 1

(b) 0

(c) -1

(d) 2

(b) 0

## Q10. (1 + tanθ + secθ) (1 + cotθ – cosecθ) is equal to

(a) 0

(b) 1

(c) 2

(d) -1

(c) 2

## Q11 Ratios of sides of a right triangle with respect to its acute angles are known as

(a) trigonometric identities

(b) trigonometry

(c) trigonometric ratios of the angles

(d) none of these

(c) trigonometric ratios of the angles

## Q12. If cos (40° + A) = sin 30°, the value of A is:?

(a) 60°

(b) 20°

(c) 40°

(d) 30°

(b) 20°

## Q13. sin (45° + θ) – cos (45° – θ) is equal to

(a) 2 cos ?

(b) 0

(c) 2 sin ?

(d) 1

(d) 1

## Q14. 5 tan² A – 5 sec² A + 1 is equal to

(a) 6

(6) -5

(c) 1

(d) -4

(d) -4

## Q15. If cos (40° + A) = sin 30°, then value of A is

(a) 30°

(b) 40°

(c) 60°

(d) 20°

(d) 20°

## Q16. If cos A + cos² A = 1, then sin² A + sin^{4} A is equal to

(a) -1

(b) 0

(c) 1

(d) None of these

(c) 1

## Q17. If sinθ + sin² θ = 1 then cos² θ + cos^{4}θ is equal

(a) -1

(b) 1

(c) 0

(d) None of these

(b) 1

## Q18. 2(sin^{6}θ + cos^{6}θ ) – 3(sin^{4}θ + cos^{4}θ) is equal to

(a) 0

(b) 6

(c) -1

(d) None of these

(c) -1

## Q19. 3 sin² 20° – 2 tan² 45° + 3 sin² 70° is equal to

(a) 0

(b) 1

(c) 2

(d) -1

(b) 1

## Q20. If x sin (90° – θ) cot (90° –θ) = cos (90° –θ), then x is equal to

(a) 0

(b) 1

(c) -1

(d) 2

(b) 1

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