if tan 2A = cot a - 18
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Answer:
cot (90°- 2A) = cot (A-18)
90°-2A = A -18
A+2A = 90°+18°
3A = 108°
A= 108°/3
A = 36°
Answered by
2
tan 2A = cot (a - 18°)
cot (90 - 2A) = cot (a - 18°)
On Comparing :-
90 - 2A = A - 18°
3A = 108°
A = 36°
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