Question No.1 , Question No.2 , Question No.3

Lesson#8
Question No.1
Q1: Find the sign of the following:
(i) sin 160°|Solution: sin 160°
As 160° lies in second quadrant and "sine" is positve there, so sin 160°>0
Question No.2
Q2: Fill in the blanks.
(i) sin ⁡(−310°)= . . . .sin310°
Question No.3
Q3: In which quadrant are the terminal arms of angle lie when;
(i) sin 0
Chapter No. 9
Fundamentals of Trigonometry
Exercise No. 9.2
mathematics
part 1