Page 95 - Math SL HB Sem 1

CIRCI]LAR FUNCI'IONS AND TRI(;ONOME'I.RY

Example 4: Given that cos d =k and 0 < e < nna
!
(a) cos(r + 0)
(b) cos(22 _ 0) (c) cos 4191
1

Example 5: Given that sind = k and 0<x <a find
2

(a) t^n 0 (b) cosec e
@) sec(z+O)

4-t I