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prasannar
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alpha_plus_gamma
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sondenso
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prasannar
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D it is thx.

Do we need to have a quick review of trigonometry fundas, Sondenso?
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prasannar
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The 30-60-90 Triangle , found this useful and posting it for you guys

https://www.themathpage.com/aTrig/30-60-90-triangle.htm
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ritula
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For a 30-60-90 Triangle, the sides are in ration 1:square root 3:2
In both the options one side is given so the desired side can be calculated using the above formula.
hence both options are suuficient, answer is D



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