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# Important Question (1 mark): Introduction to Trigonometry

## 25 Questions MCQ Test Mathematics (Maths) Class 10 | Important Question (1 mark): Introduction to Trigonometry

Description
This mock test of Important Question (1 mark): Introduction to Trigonometry for Class 10 helps you for every Class 10 entrance exam. This contains 25 Multiple Choice Questions for Class 10 Important Question (1 mark): Introduction to Trigonometry (mcq) to study with solutions a complete question bank. The solved questions answers in this Important Question (1 mark): Introduction to Trigonometry quiz give you a good mix of easy questions and tough questions. Class 10 students definitely take this Important Question (1 mark): Introduction to Trigonometry exercise for a better result in the exam. You can find other Important Question (1 mark): Introduction to Trigonometry extra questions, long questions & short questions for Class 10 on EduRev as well by searching above.
QUESTION: 1

Solution:

QUESTION: 2

### Which of the following is true:

Solution:

Trigonometric ratio  is correct.

QUESTION: 3

### If √3tanθ = 3sinθ, then the value of sin2θ−cos2θ is

Solution:

QUESTION: 4

Solution:

QUESTION: 5

If sec A + tan A = m and sec A – tan A = n, then the value of mn is

Solution:

QUESTION: 6

If 4tan θ = 3,

Solution:

QUESTION: 7

cot A tan A =

Solution:

QUESTION: 8

If sin θ − cos θ = 0, vthen the value of θ is

Solution:

QUESTION: 9

If tan θ = √3, the sec θ =

Solution:

QUESTION: 10

Given that sin A=1/2 and cos B=1/√2 then the value of (A + B) is:

Solution:
QUESTION: 11

If cot θ = 7/8, then the value of

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QUESTION: 12

Given that sinθ = a/b then cos θ is equal to

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QUESTION: 13

The value of

Solution:

QUESTION: 14

If (α + β) = 90°, then the value of

Solution:

QUESTION: 15

Solution:

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QUESTION: 16

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

Solution:

QUESTION: 17

The value of sin60cos30∘ + sin30cos60 is

Solution:

QUESTION: 18

If sin θ − cos θ = 0, then the value of sin4θ + cos4θ is

Solution:

QUESTION: 19

Solution:

QUESTION: 20

If x = a cos θ and y = b sin θ, then the value of b2x+ a2y2 is

Solution:

QUESTION: 21

If tan θ = 20/21, then

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QUESTION: 22

The value of 2 tan245+ cos230∘ − sin260 is

Solution:

QUESTION: 23

The value of tan 1 tan 2∘ tan 3………… tan 89 is

Solution:

tan 1° tan2° tan3° ..............tan 89°
= tan(90° -  89°) tan(90° - 88°) tan(90° -  87°) .........  tan 87° tan 88° tan 89°
= cot 89° cot 88° cot 87° .............tan 87° tan 88° tan 89°
= (cot 89° tan 89°) (cot 88° tan 88°) (cot 87° tan 87°) .............(cot 44° tan 44°) tan 45°
= 1x1x1x1x1.........1 = 1

QUESTION: 24

(sec2θ - 1) (1 - cosec2θ) =

Solution:

QUESTION: 25

If x = a sec θ cos φ, y = b sec θ sin φ and z = c tan θ, then the value of

Solution:

Given: x = a sec θ cos φ, y = b sec θ sin φ and z = c tan θ