3.TEST Trig. Chapter 3.1-3

Front

What is the conversion formula from radians to degrees?

Back

Degrees = Radians × (180/π)

Front

Convert 7π/4 radians to degrees.

Back

315 degrees

Front

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

Back

Area = (θ/360) × πr², where θ is the angle in degrees and r is the radius.

Front

Find the area of a sector with a radius of 10 cm and an angle of 60 degrees.

Back

Area = (60/360) × π(10)² = 17.5 cm²

Front

What is the conversion formula from degrees to radians?

Back

Radians = Degrees × (π/180)

Front

Convert 225 degrees to radians.

Back

5π/4 radians

Front

What is the cosine of 7π/4 radians?

Back

cos(7π/4) = √2/2

Front

What is the sine of 150 degrees?

Back

sin(150) = 1/2

Front

What point on the unit circle corresponds to 150 degrees?

Back

(-√3/2, 1/2)

Front

What is the value of sin(θ) when θ = 90 degrees?

Back

sin(90) = 1