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Grade 9Trigonometry

In triangle ABC if B is 30 and c is root b then A can be equal to

Profile image of Rohan
8 Years agoGrade 9
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1 Answer

Profile image of Arun
8 Years ago
Dear Rohan
 
\text{HINT: Use }\cos30^\circ=\dfrac{c^2+a^2-b^2}{2ca}=\dfrac{(\sqrt3b)^2+a^2-b^2)}{2\cdot\sqrt3b\cdot a}
 
 
 
Hope Now you can solve this. If any problem occurs please feel free to ask.
Regards
Arun (askIITians forum expert)
 

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