NCERT solution class 11 chapter 3 Trigonometric Functions exercise 3.4 mathematics

EXERCISE 3.4

---

Page No 78:

Question 1:

Find the principal and general solutions of the equation 

Answer:

Therefore, the principal solutions are x =and.

Therefore, the general solution is

Question 2:

Find the principal and general solutions of the equation 

Answer:

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 

Answer:

Therefore, the principal solutions are x = and.

Therefore, the general solution is 

Question 4:

Find the general solution of cosec x = –2

Answer:

_{cosec x = –2}

Therefore, the principal solutions are x =.

Therefore, the general solution is

Question 5:

Find the general solution of the equation 

Answer:

Question 6:

Find the general solution of the equation 

Answer:

Question 7:

Find the general solution of the equation 

Answer:

Therefore, the general solution is.

Question 8:

Find the general solution of the equation 

Answer:

Therefore, the general solution is.

Question 9:

Find the general solution of the equation 

Answer:

Therefore, the general solution is

---