SOLUTION: Prove that
(tanA - tanB)/(1 - tanAtanB) = (cotB - cotA)/cotBcotA - 1
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Question 1186948: Prove that
(tanA - tanB)/(1 - tanAtanB) = (cotB - cotA)/cotBcotA - 1
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
prove:
manipulate left side
..........use identity ,
=
=
=..........simplify
=
=
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