akat2k19
akat2k19
24-02-2017
Mathematics
contestada
anyone know how to do trigonometry
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pasha
pasha
24-02-2017
The side opposite the 30 degree angle is half of the hypotenuse.
a^2 + b^2 = c^2 =>
a^2 + (c/2)^2 = c^2
12^2 + c^2/4 = c^2
4*12^2 + c^2 - 4c^2 = 0
576 - 3c^2 = 0
- 3c^2 = - 576
c^2 = 192
c = 8√3
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