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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
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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.