NCERT Solutions for Class 11 Maths Chapter 3 Trigonometric Functions Ex 3.3

# NCERT Solutions for Class 11 Maths Chapter 3 Trigonometric Functions Ex 3.3

## NCERT Solutions for Class 11 Maths Chapter 3 Trigonometric Functions Ex 3.3

NCERT Solutions for Class 11 Maths Chapter 3 Trigonometric Functions Ex 3.3 are the part of NCERT Solutions for Class 11 Maths. Here you can find the NCERT Solutions for Class 11 Maths Chapter 3 Trigonometric Functions Ex 3.3.

#### Ex 3.3 Class 11 Maths Question 1.

Prove that:

1.

Solution:

2.

Solution:

3.

Solution:

4.

Solution:

5. Find the value of:

(i) sin 75°

(ii) tan 15°

Solution:

(i) sin 75° = sin (30° + 45°)

(ii) tan 15° = tan (45° – 30°)

Prove the following:

6.

Solution:

7.

Solution:

8.

Solution:

9.

Solution:

10.

Solution:

11.

Solution:

12.

Solution:

13.

Solution:

14.

Solution:

15.

Solution:

16.

Solution:

17.

Solution:

18.

Solution:

19.

Solution:

20.

Solution:

21.

Solution:

22. cot x cot 2x – cot 2x cot 3x – cot 3x cot x = 1

Solution:
We know that 3x = 2x + x.
Therefore,

23.

Solution:

24. cos 4x = 1 – 8 sin2 x cos2 x

Solution:

25.

Solution:

You can also like these:

NCERT Solutions for Maths Class 9

NCERT Solutions for Maths Class 10

NCERT Solutions for Maths Class 12