Question

sec 3 A = cosec ( A - 10 ) find A​

Answer 1

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☞ sec 3A = cosec (A-10)

☞ cosec (90-3A) = cosec (A-10)

☞ 90 - 3A = A - 10

☞ 100 = 4A

☞ A = 25

Therefore the value of angle A is 25 degree.

Hope It Will Help.❤️

Answer 2

Answer : A = 25°✔️

Solution :

Given that :

sec3A = cosec(A-10)

=> sec3A = sec[90-(A-10)]

[ As we know that : sec(90-A) = cosecA ]

On comparing :

=> 3A = 90-(A-10)

=> 3A = 90-A+10

=> 3A+A = 100

=> 4A = 100

=> A = 25

So, the value of A will be 25°

I hope it will be helpful for you ☺️

Fóllòw MË ❤️