# Example 3 4 Exemplar Problems Chapter 3 Class 11

“When you stop chasing the wrong things, you give the right things a chance to catch you.” —Lolly Daskal

# Example 3 & Example 4 Chapter 3 Trigonometric Functions

Example 3 Find the value of $\sqrt3\cosec20°-\sec20°$

Example 4 If θ lies in the second quadrant, then show that $\sqrt{\frac{1-\sin\theta}{1+\sin\theta}}+\sqrt{\frac{1+\sin\theta}{1-\sin\theta}}=-2\sec \theta$