Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 31

HARD

10th CBSE

IMPORTANT

Earn 100

In a right-angled triangle $PQR, ∠ Q = 90 °$ . Which of these is ALWAYS $0$ ?

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Important Questions on Introduction to Trigonometry

MEDIUM

10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 32

P

and

Q

are the acute angles such that

P > Q

. Which of the following is DEFINITELY true?

EASY

10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 33

If

\cos y = 0

, then what is the value of

\frac{1}{2} \cos \frac{y}{2}

?

EASY

10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 34

$A B C$ is an isosceles triangle, with $A B = B C .$ A semicircle of an area equal to that of the triangle is combined with it.

Question Image

What is the value of $\tan x ?$

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10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 35

What is the value of

(1 - \sin) (\sec + \tan) ?

EASY

10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 37

In the isosceles triangle

A B C, B D

is the altitude and

∠ A B C = 120^{\circ} .

What is the value of

\cos C ?

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10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 39

Which one of the following statements is true about trigonometric ratios in a right triangle

?

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10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 41

If

cosec A = 2,

find the value of

\frac{1}{\tan A} + \frac{\sin A}{1 + \cos A}

.

MEDIUM

10th CBSE

IMPORTANT

Mathematics Textbook of Competency Based Questions for Class X>Chapter 8 - Introduction to Trigonometry>Exercise>Q 42

Write the value of

\cos 1 ° \cos 2 ° . . . . . . . . \cos 180 °

.