Question

why there's sin theta in segment of a circle?​

Answer 1

Answer:

Sine is the vertical component, positive in the upper half-circle, negative in the lower. Cosine is the horizontal component, positive to the right, negative to the left. Tangent is the slope, positive in the upper-right (Quadrant One) and lower-left (Quadrant Three), negative in the other two.

Answer 2

Step-by-step explanation:

Segment (of a Circle) A segment is a region bounded by a chord of a circle and the intercepted arc of the circle. A segment with an intercepted arc less than a semicircle is called a minor segment