Free Printable Introduction to Trigonometry- Grade 10

1.

In the adjoining figure, ABC is a right triangle right angled at B; AB=24cm, BC=7cm. Using the figure , answer the question:

The value of sin A is

a)

7/(24)

b)

7/(25)

c)

(25)/7

d)

(24)/(25)

2.

Observe the figure and answer the question:

The value of sec A is

a)

(24)/7

b)

7/(24)

c)

(25)/(24)

d)

(25)/7

3.

Observe the figure and answer the question:

The value of 2cosA-sinC is

a)

(25)/24

b)

(24)/(25)

c)

(41)/(25)

d)

(49)/(25)

4.

If sinA =1, then cos A is.........

a)

0

b)

1

5.

If $\theta$ = 45 deg, then the value of $2\sin\theta\cos\theta\$ is..........

a)

0

b)

1

6.

State true/false

cot A is the product of cot and A

a)

True

b)

False

7.

State true/false

cosA is the abbreviation used for the cosecant of angle A

a)

True

b)

False

8.

State true/false
secA is not defined for A= 90 deg

a)

True

b)

False

9.

State true/false

The value of sin(theta) increases as theta increases from 0 deg to 90 deg

a)

True

b)

False

10.

The trigonometric ratios of an acute angle in a right angled triangle express the relationships between the angle and the lengths of the sides of the triangle.

a)

True

b)

False

11.

If cosA = 4/5 , then the value of tan A is

a)

3/5

b)

3/4

c)

4/3

d)

5/3

12.

$The\ value\ of\ \frac{\tan30\degree}{\cot60\degree}\ is$

a)

$\frac{1}{\sqrt{2}}$

b)

$\frac{1}{\sqrt{3}}$

c)

$\sqrt{3}$

d)

1

13.

$The\ value\ of\ \left(\sin30\degree+\cos30\degree\right)-\left(\sin60\degree+\cos60\degree\right)\ is$

a)

-1

b)

0

c)

1

d)

2

14.

$If\ \sin\alpha=\frac{1}{2}\ and\ \cos\beta=\frac{1}{2}\ ,\ then\ the\ value\ of\ \left(\alpha+\beta\right)\ is$

a)

0 deg

b)

30 deg

c)

60 deg

d)

90 deg

15.

$The\ value\ of\ \frac{1}{\sin30\degree}-\frac{\sqrt{3}}{\cos30\degree}$

a)

2

b)

1

c)

1/2

d)

0

Introduction to Trigonometry- Grade 10

Total questions: 15

Worksheet time: 23mins

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