SATHEE: Quantitative Aptitude Ques 726

Quantitative Aptitude Ques 726

Question: If $ \sin 5\theta =\cos 30{}^\circ (0{}^\circ <\theta <90{}^\circ ), $ then the value of $ \theta $ is

Options:

A) $ 12{}^\circ $

B) $ 13{}^\circ $

C) $ 14{}^\circ $

D) $ 15{}^\circ $

Show Answer

Answer:

Correct Answer: A

Solution:

$ \sin 5\theta =\cos 30{}^\circ $

$ \Rightarrow $ $ \sin 5\theta =\sin ,(90{}^\circ -30{}^\circ ) $

$ \Rightarrow $ $ \sin 5\theta =\sin 60{}^\circ $

$ \Rightarrow $ $ 5\theta =60{}^\circ $
$ \Rightarrow $ $ \theta =12{}^\circ $

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Quantitative Aptitude Ques 726

Question: If $ \sin 5\theta =\cos 30{}^\circ (0{}^\circ <\theta <90{}^\circ ), $ then the value of $ \theta $ is

Options:

Answer:

Solution:

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