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Multiple Choice
Find all solutions to the equation. 3tanθ−7=−6
A
θ=6π+2πn,65π+2πn
B
θ=65π+2πn,611π+2πn
C
θ=6π+2πn,67π+2πn
D
θ=6π+πn
Verified step by step guidance
1
Start by isolating the tangent term in the equation: 3\tan\theta - 7 = -6. Add 7 to both sides to get 3\tan\theta = 1.
Divide both sides by 3 to solve for \tan\theta: \tan\theta = \frac{1}{3}.
Recall that the general solution for \tan\theta = a is \theta = \arctan(a) + \pi n, where n is an integer, because the tangent function has a period of \pi.
Calculate \arctan(\frac{1}{3}) to find the principal value of \theta. This gives \theta = \frac{\pi}{6} as one solution.
Since the period of the tangent function is \pi, the general solution is \theta = \frac{\pi}{6} + \pi n, where n is an integer.