Honestly if you can get this (even though it's not that hard), you've understood all the basic theory behind trig. Some of the more complex stuff (ie. complex numbers, pun non-intended) aren't included.
In triangle ABC, b = 2theta, c=theta, AB = 3cm and AC = 5 cm. Find the exact area of the triangle.
It appears simple. But it takes a damn long time.
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