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OpenStudy (darkbluechocobo):
Help with trig equations
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OpenStudy (darkbluechocobo):
Solve the following equation on the interval [0, 360°]: 3sin2x =-2cos^2(2x)
mathslover (mathslover):
Analyze this question. What do you think the method should be to solve the question?
myininaya (myininaya):
good question for @dtan5457 to look at too :)
mathslover (mathslover):
Yeah! He will get some practice too! :)
OpenStudy (darkbluechocobo):
Hmm we could first add 2 to both sides
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mathslover (mathslover):
Okay, go on!
OpenStudy (darkbluechocobo):
so we would get \[5\sin(2x)=\cos^2(2x)\]
mathslover (mathslover):
How did you get to this?
OpenStudy (darkbluechocobo):
|dw:1427082718555:dw|
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