Question

How to find sec and cosec 180 (degrees)

Answer 1

sec(x) = 1/[(cos(x)]; cosec(x)=1/[sin(x)]
Sub. x= 180 deg in both cases above to find the values

Answer 2

sin 180 and 270 how to find

Answer 3

sin180 = 0 --> cosec(180) is undefined
sin(270) = -1 --> cosec(270) = -1

Answer 4

How to find it?

Answer 5

Compound angles?

Answer 6

sin(A+B) ????

Answer 7

Sketch the graph for sinx and cosx.