Exercises: Apply the Law of Sines and the Law of Cosines

Grade 10·22 problems·~35 min·Common Core Math - HS Geometry·standard·hsg-srt-d-11

Work through problems with immediate feedback

Recall / Warm-Up

Which formula correctly states the Law of Sines for triangle $ABC$ ?

$\dfrac{a}{\sin A} = \dfrac{b}{\sin B} = \dfrac{c}{\sin C}$

$a^2 = b^2 + c^2 - 2bc\cos A$

$\dfrac{\sin A}{a} = \dfrac{\sin B}{b} + \dfrac{\sin C}{c}$

$a = b\sin A + c\cos A$