Christmas MT's answer to cherry's Secondary 3 A Maths Singapore question.
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For qn 1, we can use the identity tan(90-x)= cot(x). For qn 2, we must understand that it is in quadrant 2 because the Angle A is between 0 and 180 degrees and tan(A) is negative so it must be either quadrant 2 or 4.
Date Posted:
3 years ago