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If   \sin A = 9/16  ;  find value of  |\sin A/2+ \cos A /2 |

  • Option 1)

    5/3

  • Option 2)

    3/5

  • Option 3)

    5/4

  • Option 4)

    4/5

 

Answers (1)

best_answer

As we have learned

Results from Submultiples of an angle -

\left | \sin \frac{A}{2}+\cos \frac{A}{2} \right |= \sqrt{1+\sin A}

-

 

 \left | \sin A/2 + \cos A/ 2 \right | = \sqrt{1+ \sin A }= \sqrt{1+9/16}=5/4

 


Option 1)

5/3

Option 2)

3/5

Option 3)

5/4

Option 4)

4/5

Posted by

Himanshu

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