HOw do I get the sides of a right triangle if I have the three angles

Question

amistre64 · Answer

use the law of sines

amistre64 · Answer

law of cosines might be better :) since you can solve to an angle that way

anonymous · Answer

when you have two of the angles, you can use the Pythagorean  Theorems.

amistre64 · Answer

$$c^2=a^2+b^2-2ab\ cos(C)$$
$$\frac{c^2-a^2-b^2}{-2ab}=cos(C)$$
$$cos^{}-1\left(\frac{c^2-a^2-b^2}{-2ab}\right)=C$$

amistre64 · Answer

i read; when i have the 3 sides ...

amistre64 · Answer

law of sines was right to begin with :)
$$\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}$$

amistre64 · Answer

sin(90) = 1 so thats a given

amistre64 · Answer

.... an example might help me out to organize the thoughts lol

amistre64 · Answer

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you cant get the sides

anonymous · Answer

right triangle 
90
75
15
what are the sides

amistre64 · Answer

you can get the unit circle version of it; but the sides themselves can be any scaled version of that

amistre64 · Answer

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amistre64 · Answer

which triangle is the right one?

amistre64 · Answer

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