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Q.

If 3x cosec 36∘=sec 54∘ , then find out the value of x.


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a

0

b

1

c

13

d

34  

answer is C.

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Detailed Solution

It is given that,
3x cosec 36°=sec 54° ⇒3x cosec(90°-54°)=sec 54° ⇒3x sec 54°=sec 54° ⇒3x=1 ⇒x=13 Therefore, value of x is 13.
Hence, option (3) is correct.
 
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