Answer each of the following questions in one word or one sentence or as per exact requirement of for question:

$Find the are of the triangle Δ A B C i n w h i c h a = 1, b = 2 a n d ∠ c = 60^{\circ} .$

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Solution

$A r . Δ A B C = \frac{1}{2} a b s i n C = \frac{1}{2} \times 1 \times 2 \times s i n 60 = \frac{\sqrt{3}}{2} s q . u n i t s .$

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∠ C = 60 °

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