A "triangle" with the angles 0, 90, and 90 degrees cannot be considered a triangle since the two 90 degree angles make a right angle, and 0 degrees would mean a flat line. Rather it would resemble something like a straight U that is stretched sideways.
To calculate circumference, you must use the equation (65)(2)(Pi) which would be 408.2pm. (IF YOU COUNT PI AS 3.14)
<span>3x + 2y = 8
2y = 8 - 3x
y = (8 - 3x)/2</span>
Cos x = sqrt( 100 - 9) / 10
<span>= 0.9539392014</span><span>sin x = 0.3 = 3/10
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