EduSahara™ Worksheet

EduSahara™ Assignment

Name : Trigonometric Ratios of Complementary Angles

Chapter : Trigonometrical Ratios

Grade : ICSE Grade IX

License : Non Commercial Use

Question 1

1.

From the given figure,
find
sin

(

90

−

I

)

(i)

HI

GH
(ii)

GH

GI
(iii)

GH

HI
(iv)

GI

GH
(v)

HI

GI

Question 2

2.

From the given figure,
find
cos

(

90

−

I

)

(i)

IJ

JK
(ii)

IK

IJ
(iii)

IJ

IK
(iv)

JK

IK
(v)

JK

IJ

Question 3

3.

From the given figure,
find
tan

(

90

−

B

)

(i)

BC

BD
(ii)

CD

BD
(iii)

BD

BC
(iv)

BC

CD
(v)

BD

CD

Question 4

4.

From the given figure,
find
cosec

(

90

−

H

)

(i)

IJ

HJ
(ii)

IJ

HI
(iii)

HJ

IJ
(iv)

HI

IJ
(v)

HJ

HI

Question 5

5.

From the given figure,
find
sec

(

90

−

H

)

(i)

HJ

IJ
(ii)

HI

IJ
(iii)

HI

HJ
(iv)

HJ

HI
(v)

IJ

HI

Question 6

6.

From the given figure,
find
cot

(

90

−

J

)

(i)

JK

JL
(ii)

KL

JK
(iii)

KL

JL
(iv)

JL

KL
(v)

JL

JK

Assignment Key