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Question
Answer the following questions in one word or one sentence or as per exact requirement of the question.
Find the area of the triangle ∆ABC in which a = 1, b = 2 and \[\angle C = 60º\]
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Solution
In ∆ABC, a = 1, b = 2 and \[\angle C = 60°\]
∴ Area of the ∆ABC \[= \frac{1}{2}ab\sin C\]
\[ = \frac{1}{2} \times 1 \times 2 \times \sin60°\]
\[ = \frac{1}{2} \times 2 \times \frac{\sqrt{3}}{2}\]
\[ = \frac{\sqrt{3}}{2} \text{ square units }\]
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