applying the law of sines 7.5/sin R=5.9/sin 43-----> 7.5*sin 43=5.9*sin R---> sin R=7.5*sin 43/5.9 sin R=0.8669---------> R=arc sin (0.8669)----> R=60.11°----> R=60°
the answer Part 1) is the option <span>D. 60 </span> Part 2) <span>In triangle ABC mA=43, mB=62 and BC=22 in. What is AB to the nearest tenth of an inch?
we know that </span>∠C=180-(62+43)-----> ∠C=75° <span> Applying the law of sines 22/sin 43=AB/sin 75------> AB=22*sin 75/ sin 43-----> AB=31.16 in AB=31.2 in