Find the values of the trigonometric functions sin 765^o

10

Find the values of the other five trigonometric functions in the following problem: sec θ = 13/5, θ lies in fourth quadrant.

11

Tan x = , x lies in second quadrant.

13

Find the value of the following trigonometric function: cosec(-1410^o)

14

Find the value of the following trigonometric function:sin ()