Math, asked by balu58, 9 months ago

If cotA=tanB,then COS(A+B)=

Answers

Answered by 217him217

1

Answer:

Step-by-step explanation:

CotA=tanB

CosA/sinA=sinB/cosB

CosAcosB=sinAsinB

CosAcosB-sinAsinB=0

Cos(A+B)=0

Answered by zahaansajid

2

cotA = tanB

cotA = cot(90-B)

Hence,

A = 90-B

A+B = 90

cos(A+B) = cos(90) = 0

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