Homework Help: trig

Posted by maya on Monday, May 30, 2011 at 7:55pm.

Ok, so im brand new at trigonometry. If i have a right triangle with an acute angle of 30° an opposite side of 4 and a hypotenuse of x how do ii find x

trig - Damon, Monday, May 30, 2011 at 8:13pm
sin 30 = opposite / hypotenuse = 1/2
4/x = 1/2
x = 8

by the way:
If it is a right triangle one angle is 90 degrees
the sum of angles is 180
so
90 + 30 + last angle = 180
the last angle is 60

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