Danny’s 7 friends contributed an equal amount of money to buy him a birthday present. The present cost $84. How much money did e
1 answer:
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From the law of sines, we have
where is the leg we're interested in,
is the hypothenuse,
is the angle opposite to
, and
is the angle between
and
.
So, in the first case, we can use
And in the second excercise, we use