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Yadi tanA=cotB proof A+B=90

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Yadi tanA=cotB proof A+B=90

Posted by Harsh Verma 6 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Ram Kushwah 6 years, 7 months ago

tanA=cotB

tanA=1/tanB

tanAtanB=1

tan(A+B)=tanA+tanB/1-tanATab

=tanA+tanB/1-1

=tanA+tanB/0

tan(A+B)={tex}\infty{/tex}

or tan(A+B)=tan90

hence A+B=90

0Thank You

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CBSE > Class 10 > Mathematics