Trigonometry
Interactive practice questions
Consider the given triangle.
a
First, find the value of $\angle BAC$∠BAC.
b
Find the length of $c$c.
Round your answer to two decimal places.
Easy
Approx 3 minutes
Consider the following diagram:
Use the sine rule to prove that the area of $\triangle ABC$△ABC is given by the equation $Area=\frac{a^2\sin B\sin C}{2\sin A}$Area=a2sinBsinC2sinA.
We want to prove that the area of a parallelogram is the product of two adjacent sides and the sine of the included angle.
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Outcomes
10D.T3.04
Solve problems involving the measures of sides and angles in acute triangles