Question
If 4tan4 + 9 – 12tan2 = 0, then
find the value of cot.Solution
4tan4 + 9 – 12tan2 = 0Or, (2tan2 - 3)2 = 0Or, tan2 = 3/2Or, cot2 = 2/3So, cot = ±√(2/3)
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