Back to Prove Laws of Sines and Cosines — Problem 2 · Task Set 23

Exercises: Prove the Laws of Sines and Cosines

Grade 10·21 problems·~35 min·Common Core Math - HS Geometry·standard·hsg-srt-d-10

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Recall and Warm-Up

In triangle $ABC$ , an altitude $h$ is drawn from vertex $C$ to side $AB$ . In the resulting right triangle, $\sin(A) = \dfrac{h}{b}$ . What does this give for $h$ ?

$h = \dfrac{b}{\sin A}$

$h = b \sin A$

$h = a \sin A$

$h = b \cos A$