Eric Nicholas K's answer to Tricia Chew's Secondary 3 A Maths Singapore question.
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Part b is not related to part a and is more complicated.
We solve this the normal way we would solve an equation like
3 sin u + 1 = 0
except that u = (2x - 40) degrees and x is defined to be between 0 degrees and 360 degrees, so if we work out u, we need angles of u to lie between -40 degrees and 680 degrees.
We solve this the normal way we would solve an equation like
3 sin u + 1 = 0
except that u = (2x - 40) degrees and x is defined to be between 0 degrees and 360 degrees, so if we work out u, we need angles of u to lie between -40 degrees and 680 degrees.
Date Posted:
3 years ago
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