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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: JieSun92 on August 14, 2012, 08:00:56 pm

Title: question about trig
Post by: JieSun92 on August 14, 2012, 08:00:56 pm

From a point, A, due north of a tower, the angle of elevation to the top of the tower is 45 degrees.From a point, B, 100 m on a bearing of 120 degrees from A, the angle of elevation is 26 degrees. Find the height of the tower.
does anyone know how to do this?

Title: Re: question about trig
Post by: fred42 on August 15, 2012, 09:49:35 pm

See attached.

Title: Re: question about trig
Post by: JieSun92 on August 15, 2012, 11:39:29 pm

tried doing it this way but kept getting a different answer
anyways thanks fredd ;D