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Question

cotA+tanBcotB+tanA=cotAtanB

A
True
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B
False
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Solution

The correct option is A True
cotA+tanBcotB+tanA=1tanA+tanB1tanB+tanA

=1+tanAtanBtanA1+tanAtanBtanB

=tanBtanA

=cotAtanB

So the relation is True

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