How do you find the sine, cosine, and tangent values given a point on a circle? be able to provide an example.

Answer with explanation:

Suppose a point (a,b) lies on the circle.

To find Sine, Cosine and Tangent values we need to construct a right angled triangle.

So, to Construct a right triangle inside a Circle

Draw a diameter of the circle.Join the end points of diameter to the point lying on the circle.

Angle in a Semicircle is right triangle.

So, Right triangle is constructed.The two sides can be calculated , if end points of diameter is Known and also the hypotenuse which is Diameter of the circle.

Then we can be Evaluate Sine, Cosine and Tangent values.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

i believe it's a.

i'm not sure on this one, most likely correct.