A 20-pack of Dr. Pepper cost $5.50 and a 6-pack cost $1.50. Which is the better deal?
1 answer:
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As you can see in the picture, this is 6-8-10 right triangle.
One of angles is 90° so you can find others
8/6 = 4/3
6/8= 3/4
tan-1(4/3) = 36.9 °
tan-1(3/4) = 53.1 °
tan<R= 53.1 °
Hope this helps ^-^
