Find the values of other five trigonometric functions 
1. Cos x = , x lies in third quadrant.

5

If, in two circles, arcs of the same length subtend angles of 60^o and 75^o at the centre, find the ratio of their radii.

6

Find the angle in radian through which a pendulum swings if its length is 75cm and the tip described an arcs of length
(i) 10cm
(ii) 15cm
(iii) 21cm

8

Find the values of other five trigonometric functions 
(i) Sin x = , x lies in second quadrant.

9

Cot x = , x lies in third quadrant.