10th Class Mathematics Introduction to Trigonometry Question Bank Introduction to Trigonometery

  • question_answer
    Find the value of\[\text{sin 15}{}^\circ \].

    A)  \[\frac{\sqrt{3}+1}{\sqrt{2}}\]  

    B)         \[\frac{\sqrt{3}-1}{\sqrt{2}}\]

    C)  \[\frac{\sqrt{3}+1}{2\sqrt{2}}\]

    D)         \[\frac{\sqrt{3}-1}{2\sqrt{2}}\]

    Correct Answer: D

    Solution :

     \[\text{1}0\text{32 }=\text{ 4}0\text{8 }\times \text{ 2 }+\text{ 216}\] \[\text{4}0\text{8 }=\text{ 216 }\times \text{ 1 }+\text{ 192}\] \[\text{216 }=\text{ 192 }\times \text{ 1 }+\text{ 24}\]


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