What is the radius of a circle whose diameter is 12cm given tt =3.14​

Radius = diameter/2

radius = 12/2
= 6cm

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.