Question

If sec4A=cosec (A-20) where 4A is an acute angle,find the value of A.

Answer 1

Answer:

A=20

Step-by-step explanation:

cosec(90-4A)=cosec(A-20)

90-4A=A-20

5A=100

A=20

Answer 2

Answer

A = 22 degree

Step by step explanation

sec4A = cosec(A - 20)

➡cosec (90 - 4A) = cosec(A - 20)

➡90 - 4A = A - 20

➡ 5A = 110

➡ A = 22