If sinx = ¾, then cosx = ?

A

B √⅔

C √⁷⁄₄

D ½

Solution

Correct Answer: Option C

দেওয়া আছে sinx=3/4
এখানে লম্ব =3
অতিভুজ =4
ভূমি = √(4²-3²)
          =√(16-9)
         =√7

তাহলে ,Cosx=ভুমি/অতিভুজ =√7/4

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