Question

If Sec (7°-2 a)= Cosec (5a-7), then the value of a is:
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Answer 1

Hi there !!

Sec (7°-2 a)= Cosec (5a-7)

sec(90-(7-2a)) = cosec(5a-7)

[ sec(90-A)=cosecA ]

cosec (90-7+2a ) = cosec (5a-7)

90-7+2a = 5a-7

83+7 = 5a-2a

90 = 3a

a= 30°

Thankyou :)