Page 109 - Math SL HB Sem 1
P. 109
CIRCULAR FUNCTIONS AND I'RIGONOME'I'RY
Example 4: Simplify sindcos 1o -.osr.inlz and hence find the smallest positive
value of d for which the expression has a minimum value.
Example 5 lf tan 0 = I , d is acu1e, find the exact values oftan 20 andtan40
A
3tr
1
Example 6: If cos A= -L, n s A< , find the values of sin j o, *, o
2
!A
-d tun
2
4-32
