Question

If sec A = cosec (A - 20°), where A is an acute angle, find the value of A.​

Answer 1

Answer:

Step-by-step explanation:

cosec(90 - A) = cosec(A - 20)        sec theta = cosec(90 - theta)

90 - A = A - 20

90 + 20 = A + A

110 = 2A

A = 55 degree

Answer 2

Answer:

cosec (90-A) =cosec (A-20)

90-A=A-20

90+20=2A

110=2A

110÷2=A

A=55

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