Question

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

Answer 1

Answer:

Step-by-step explaination

cosec(90-4A)=secA

SO,

cosec90-4A=cosecA-20

90-4A=A-20

110=5A

A=22

Answer 2

Step-by-step explanation:

sec4A=cosec(A-20)

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

90-4A=A-20

90+20=A+4A

110=5A

A=110/5

=22

angleA=22°