# MCQ on Introduction to Trigonometry (Part 1) – Class 10 Mathematics – Chapter 8 (NCERT)

The Chapter 8 of class 10 Mathematics under NCERT Syllabus is about the Introduction to Trigonometry. The Chapter discusses about the Trigonometric Ratios, Trigonometric Ratios of some Specific Angles, Trigonometric Ratios of Complementary Angles, Trigonometric Identities etc. This section Consists of MCQ (Multiple Choice Questions) based on the Introduction to Trigonometry.

This is the Part 1 of MCQ on Introduction to Trigonometry. This part consists of 20 Multiple Choice Questions. Each of the MCQs has 4 options and out of the 4 only 1 is correct option. Choose all the correct answers and the click on the submit button to get the results.

## MCQ on Introduction to Trigonometry (Part 1) -  Class 10 Mathematics - Chapter 8 (NCERT)

1.
$sin2A=2sinA$ is true when $A$ is equal to

2.
If $tan\theta-\frac{4}{tan\theta}=3$, then $sin^2\theta$ is

3.
If $sin\theta=\frac{a}{b}$, then $cos\theta$ is equal to

4.
In a $\vartriangle PQR$, $\angle Q=90^0$. If $PQ=10cm$ and $PR=15cm$. Then the value of $tan^2P+sec^2P+1$ is

5.
If $sin A=\frac{4}{5}$, then the value of $\frac{1-sinA}{1+cosA}$ is

6.
In $\vartriangle ABC$, if $AB=BC$, $\angle B=90^0$, then the value of $sin A$ is

7.
If $sina=\frac{1}{2}$ and $cosb=\frac{1}{2}$, then the value of $(a+b$ is

8.
$cot^230^0+cosec30^0+3tan^230^0$ is equal to

9.
Trigonometry is branch of Mathematics in which we deal with the relationship between angle and sides of a triangle.

10.
$7cos30^0+5tan30^0+6cot60^0$ is

11.
The value of $cos \theta$ increases with increase in $\theta$

12.
If $\theta$ is an acute angle and $4 sin\theta =3$, then the value of $4sin^2\theta-3cos^2\theta+2$ is

13.
If $tan\theta+\frac{1}{tan\theta}=2$, then the value of $cosec\theta$ is

14.
If $cos A=\frac{4}{5}$, then the value of $tan A$ is

15.
If $xtan45^0cos 60^0=sin 60^0cot60^0$, then the value of $x$ will be

16.
If $cos\theta=\frac{2}{3}$, then the value of $2sec^2\theta+2tan^2\theta-9$ is

17.
The value of $\frac{2tan 30^0}{1-tan^230^0}$ will be

18.
If $x cos A=8$ and $15 cosec A=8 sec A$, then the value of $x$ is

19.
Is $tan^2 30^0+cot^2 30^0=\frac{10}{3}$?

20.
If $y sin A=5$ and $7 cosec A=6 sec A$, then the value of $y$ is

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