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OpenStudy (anonymous):
Find all solutions of the equation: sec 4x = 2
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OpenStudy (anonymous):
x=1/2
OpenStudy (bahrom7893):
wait is it.. i dont think so.. kumar's wrong
OpenStudy (mertsj):
cos4x=1/2 4x=60 x=15
OpenStudy (mertsj):
If you need all the solutions in a given interval, we had better revisit the solutions.
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OpenStudy (anonymous):
The interval is between (o, 2pi]
OpenStudy (mertsj):
Otherwise all the solutions are 4x= 60, 300, 420, 660, 780,1020, 1140,1380 and x= 15, 75, 105, 165,195,255,285,345+2 pi n
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