Acellus Find the indicated side of the
triangle.
b
a
30°
12
12
[?]
a
Enter

a =

Step-by-step explanation:

Using the tangent ratio in the right triangle and the exact value

tan30° = , then

tan30° = = = ( cross- multiply )

a × = 12 ( divide both sides by )

a =

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

the answer is  

a.

4,624π mm2

step-by-step explanation: