Question

if sec 4A=cosec(A-20);A?​

Answer 1

Answer:

HI MATE YOUR ANS

Step-by-step explanation:

SEC4A=COSEC (A-20°)

SEC4A=SEC (90°-(A-20°))

SEC4A=SEC (110°-A)

4A=110°-A

A=22°

Answer 2

Given that :

sec4A = cosec(A-40)

=> sec4A = sec[90-(A-40)]

On comparing :

4A = 90-(A-40)

=> 4A = 90-A+40

=> 5A = 130

=> A = 26°

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