Posted by tushar on .
in RIGHT triangle abc the radian measure of angle c is pi/6, what is the length of bc? ab = 2
i was thinking of taking the sin of pi/6 since bc is the y axis. but it does not match the answer of 2 root 3
I would have to know where the right angle is.
You are clearly dealing with the 30,60,90º triangle which has sides 1,√3,2 respectively.
π/6 radians = 30º, and you give me 2 unit as the side across from the 30º angle.
so 2√3 makes sense as the side across form 60º (2π/6)