SOLUTION: Fonda all solutions of the equation sec(pi/4)x=-rad2
I tried isolating x and I got -1 as the answer but the real answer is 3+8n.
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I tried isolating x and I got -1 as the answer but the real answer is 3+8n.
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Question 808478: Fonda all solutions of the equation sec(pi/4)x=-rad2
I tried isolating x and I got -1 as the answer but the real answer is 3+8n. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! sec[(pi/4)x] = -sqrt(2)
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cos((pi/4)x] = -1/sqrt(2)
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The angle is in QII or in QIII
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(pi/4)x = (3/4)pi or (5/4)pi
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x = 3 or x = 5
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Cheers,
Stan H.
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