Question
If cot8A = tan(A+8˚), find the value of A? Given that
8A and A+8 are acute angles.Solution
Always remember that cot & tan are compliment to each other So tan ɵ = cot( 90-ɵ) So it is given that cot8A = tan(A+8˚) Hence 8A + A+8˚= 90˚ So 9A+8˚ = 90˚ or 9A = 90˚ - 8˚= 82˚ or A = 82˚/9 = 91.3˚
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