Math Class 11 Chapter 9 - Fundamentals of Trigonometry

True or False
1. General angle has anticlockwise direction. 2. Length of an arc of circle is equal to radius multiplied by measure of its central angle. 3. Sine and cosine functions are equal when angle is of measure 60 o. 4. Range of sine function lies between -1 and 1. Length of an arc of circle is equal to radius multiplied by measure of its central angle? If sin < 0 and cos >0 then terminal ray of 0 lies in 2nd quadrant? Sine and cosine functions are equal when angle is of measure 60 o? Range of sine function lies between -1 and 1?