Possible Values of X

mikexz

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Feb 21, 2006
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I've been trying to answer this question for the last 30 mins, I found the answer at the back of the text book but I don't know how to get it. Can someone plz help me.

A NON-ACUTE triangle has three angles: A, B, C. Angle B = 4x. What are the possible values of x.

Answer: 22.5 is less or equal to x. x is less than 45.



thanks
 
Assume that B is the obtuse angle.
90<4x<180.
 
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