# NCERT solution class 11 chapter 3 Trigonometric Functions exercise 3.4 mathematics

## EXERCISE 3.4

#### Question 1:

Find the principal and general solutions of the equation

Therefore, the principal solutions are x =and.

Therefore, the general solution is

#### Question 2:

Find the principal and general solutions of the equation

Therefore, the principal solutions are x =and.

Therefore, the general solution is, where n ∈ Z

#### Question 3:

Find the principal and general solutions of the equation

Therefore, the principal solutions are x = and.

Therefore, the general solution is

#### Question 4:

Find the general solution of cosec x = –2

cosec x = –2

Therefore, the principal solutions are x =.

Therefore, the general solution is

#### Question 5:

Find the general solution of the equation

#### Question 6:

Find the general solution of the equation

#### Question 7:

Find the general solution of the equation

Therefore, the general solution is.

#### Question 8:

Find the general solution of the equation

Therefore, the general solution is.

#### Question 9:

Find the general solution of the equation