IF the question is as you stated it, "128.35" is impossible because if F is positive F cos x would be negative and if F is negative, F sin x would be negative.

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- May 31st 2013, 10:29 AM #1

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- May 31st 2013, 11:08 AM #2

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- May 31st 2013, 11:24 AM #3

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- May 31st 2013, 12:44 PM #4

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## Re: Im I right??

So your equations are F cos(x)= -54.684 and F sin(x)= 69.313?

Then clearly 51.65 degrees cannot be correct. I presume neglecting the negative was your error in doing the calculation and you see now that

128.35 degrees is correct? (Actually, I get 128.27 degrees.)

- Jun 1st 2013, 12:27 AM #5

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- Jun 1st 2013, 12:53 AM #6