Tony J. answered • 01/08/18
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Math PhD with 10+ years experience teaching online and in person
If the tangent of an angle is sqrt(3), that tells us the angle must be 60 degrees, or (60 + 180k) degrees if we're allowing numbers outside of the 0 to 90 range.
Therefore, we know that theta + 15 = 60 (or theta + 15 = 60+180k)
Subtracting 15 should get us our answer.
Does that help?
