Question

1/2×sin theta × radius^2.....where this formula is used?

Answer 1

Answer:

It used to calculate are of equilateral triangle in areas related to circle chapter

Step-by-step explanation:

Answer 2

Here is your answer:

This formula is used for calculating the area of a sector of a sector.     ( by finding the area of triangle)

This formula applies for all the triangle in square = 1/2SinФr²