# NCERT SOLUTIONS FOR CLASS 11 MATHS CHAPTER 3 / TRIGONOMETRIC FUNCTIONS EX 3.4 /

Find the principal and general solutions of the following equations:

Question 1. $tanx=\sqrt { 3 }$

Solution.

Question 2. sec x = 2

Solution.

Question 3. $cotx=-\sqrt { 3 }$

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.

#### NCERT SOLUTIONS FOR CLASS 11 MATHS CHAPTER 4 / PRINCIPLE OF MATHEMATICAL INDUCTION EXERCISE – 4.1 /

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