Answered

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Tan 2 theta - 10 cot 2 theta=3

Sagot :

Solution :

We know, cot 2θ = 1/tan 2θ

Multiplying tan 2θ  both side of the given equation.

tan²2θ - 3tan 2θ - 10 = 0

tan²2θ - 5tan 2θ + 2tan 2θ  - 10 = 0

tan 2θ ( tan 2θ - 5 ) + 2 ( tan 2θ  - 5 ) = 0

tan 2θ = -2 or tan 2θ  = 5

Therefore, [tex]\theta = \dfrac{tan^{-1} (-2)}{2}[/tex] or [tex]\theta = \dfrac{tan^{-1} (5)}{2}[/tex]

Hence, this is the required solution.

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