You need the Law of Sines for this. In our case we have the measure of angle B and side b, we have the measure of angle A and are looking for side a, or x. Setting up the Law using our info, we have 
. We will solve for x by multiplying both sides by sin(42): 
, first choice above.
Find the height of a right square pyramid that has a rectangular base area of 70 square units and a volume of 140 cubic units. A
1 answer:
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