Page 110 - Math SL HB Sem 1
P. 110
CIRCULAR FUNCTIONS AND TRIGONOMETRY
Example 9: If tan ,": a. 1r, find the value of ran A.
*,0.
'l + sin 2l
l')xample l0: prove that - cos I + sin ,,4 whenever both exoressions have
cos2A cos I -sinl
meaning
4-34
