Proving expressions in Trigonometry
Asked by | 24th Sep, 2008, 06:39: PM
Expert Answer:
this expression is wrong.
to check this, simply put A=B = 45o
LHS = (1-cos45o +cos90o) / (1+cos45o +cos90o) = (
2-1) / (2+1)
RHS = tan (45o/2) cot (45o/2) =1
since LHS 
RHS
i.e. this cant be proved.
Answered by | 17th Dec, 2008, 12:41: AM
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