geometry
2007-03-11 09:13:33 · 6 answers · asked by ashley b 1 in Science & Mathematics ➔ Mathematics
The altitude forms two congruent 30-60-90 degree triangles.
The side is the hypotenuse, the altitude is the longer leg and the short leg is hypotenuse/2.
Altitude = (1/2)side * sqrt(3) = 15sqrt(3) cm.
2007-03-11 09:18:52 · answer #1 · answered by ironduke8159 7 · 0⤊ 1⤋
30^2 + 30^2 -2*30*30*cosa
a is the angle which is for altitude.
2007-03-11 16:32:11 · answer #2 · answered by hbj 2 · 0⤊ 1⤋
15cm^2 + length^2 = 30cm^2
225cm + length^2 = 900cm
length^2 = 675cm
length = 25.980762113533159402911695122588
2007-03-11 16:20:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
h = 30 sin(60) = 30(.866) = 25.898
2007-03-11 16:19:13 · answer #4 · answered by bignose68 4 · 0⤊ 0⤋
one m and 80 c m
2007-03-11 16:19:29 · answer #5 · answered by talha i 1 · 0⤊ 1⤋
pythagorean theorem
30^2-15^2=a^2
a=sqrt(675)
2007-03-11 16:19:49 · answer #6 · answered by leo 6 · 0⤊ 1⤋