L3: Radian Measures

Front

What is the formula to convert radians to degrees?

Back

Degrees = Radians × (180/π)

Front

Back

130 degrees

Front

What is the length of an arc in a circle?

Back

Length of arc = r × θ (where r is the radius and θ is the angle in radians)

Front

Back

Front

What is the relationship between the circumference of a circle and radians?

Back

The circumference of a circle is 2πr, and 1 full rotation (360 degrees) is 2π radians.

Front

How many radians are in a full circle?

Back

2π radians

Front

Back

90 degrees

Front

Back

270 degrees

Front

Back

Front

What is the formula for finding the area of a sector in a circle?

Back

Area of sector = 0.5 × r^2 × θ (where r is the radius and θ is in radians)