What is the length of bc ? round to the nearest tenth.
16 cm

Since Sin is equal to opposite over hypotenuse

so that's mean Sin(60°) =

#I just rounddown from angle 65° to 60° as the number is not that much different.

and Sin(60°) is equal to

so we got Sin(60°) = =

x =

x ≈ 14

then we can answer C)14.5

the answer D) is not correct for sure because the opposite cannot be longer than hypotenuse in the Right Triangle form.

(a) the volume of the cone is 20/3 in3

hence, option a is correct.