help plzz
Asked by vt2008 | 19th Sep, 2010, 05:09: PM
Expert Answer:
LHS
= Tan(69+66)... using the formula for tan(A+B)
=Tan (135)
=tan (180-45)
= tan (-45)...as pie is the period of tan function
=-1
Answered by | 19th Sep, 2010, 09:37: PM
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