SOLUTION: Solve the equation. ( Use n as an integer constant. Enter your response in radians.)
13 cos x + 7 = −cos x
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-> SOLUTION: Solve the equation. ( Use n as an integer constant. Enter your response in radians.)
13 cos x + 7 = −cos x
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Question 929089: Solve the equation. ( Use n as an integer constant. Enter your response in radians.)
13 cos x + 7 = −cos x Found 2 solutions by ewatrrr, stanbon:Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! 13 cos x + 7 = -cos x
14cos x = -7
cos x = -7/14
cos x = -1/2
x = 2π/3 + 2nπ and x = 4π/3 + 2nπ
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(cosx, sinx) Summary Unit Circle .
You can put this solution on YOUR website! 13 cos x + 7 = −cos x
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14*cos(x) = -7
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cos(x) = -7/14 = -1/2
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x = arccos(-1/2) = (2/3)pi or x = (4/3)pi
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Cheers,
Stan H.
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