Math, asked by satyendrarly4474, 1 year ago

Cos(40+A)=1/cosec 30 find value of A

Answers

Answered by garima668

3

Step-by-step explanation:

cos(40+A)=1/cosec30

sin[90-(40+A)]=sin30

90-40-A=30

-A=-20

A=20

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