Question

7. If tan A = cot B, prove that A + B = 90°.​

Answer 1

Answer:

Tan (90-b)=cotb...........so tanA=tan(90-b)=A=90-B.......A+B=90.....

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Answer 2

Answer:

Step-by-step explanation:

TanA = cotB

SinA/cosA=cosB/sinB

sinAsinB=cosAcosB

0=CosAcosB-sinAsinB

0=Cos(A+B)

cos(A+B)=cos90

A+B=90

HENCE PROVED !

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