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Value of Standard Angle(30,60,90)

If sec 2 A=co...

Question

If sec 2A = cosec (A − 42°), where 2A is an acute angles, find the value of A.

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Solution

Given: and is an acute angle

We have to find

So we proceed as follows to calculate

Hence the value of is

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If sec 2A = cosec $(A - 42^{o})$ ,where 2A is an acute angle, find the value of A.

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