Chapter 3 – Trigonometric Functions (Ex – 3.4)

Trigonometric Functions (Ex – 3.4)

Find the principal and general solutions of the following equations:

Question 1.
tanx = √3

Solution.

Question 2.
sec x = 2

Solution.

Question 3.
cotx = −√3

Solution.

Question 4.
cosec x = -2

Solution.

Find the general solution for each of the following equations:

Question 5.
cos 4x = cos 2x

Solution.

Question 6.
cos 3x + cos x – cos 2x=0

Solution.

Question 7.
sin 2 x + cos x = 0

Solution.

Question 8.
sec²2x = 1 – tan 2x

Solution.

Question 9.
sin x + sin 3x + sin 5x = 0

Solution.