Homework Help: Geometry

Posted by Mariana on Sunday, January 9, 2011 at 7:23pm.

The diagonals of a rectangle are 12 inches long and intersect at an angle of 60 degrees. Find the perimeter of the rectangle.

Geometry - Henry, Monday, January 10, 2011 at 7:40pm
The angle bet. the diag. and the long
side = 30 deg.

X = 12cos30 = 10.4in = l0ng side.
Y = 12sin30 = 6in = short side.

P = 2*10.4 + 2*6 = 32.8in.

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