Conversion (Radians to Degrees)
Convert 60° to radians
π/3
100: Find a positive coterminal angle for -90°
270°
Find the reference angle for 240°
60°
Find cos(π/4)
√2/2
Right triangle: angle = 30°, opposite side = 7. Find the hypotenuse
14
Convert 2π/3 radians to degrees
120°
Find a negative coterminal angle for 200°
-160°
Find the reference angle for 2π/3
π/3
Find sin(π)
0
Right triangle: angle = 60°, adjacent side = 5. Find the opposite side
5√3
Convert 210° to radians
7π/6
Are 420° and 60° coterminal?
Find the reference angle for -135°
45°
Find tan(π/6)
√3/3 or 1/√3
: Right triangle: angle = 45°, hypotenuse = 10. Find one leg
5√2
Convert 11π/6 radians to degrees
330°
Find the smallest positive coterminal angle for -7π/3
5π/3
Find the reference angle for 290°
70°
Find sin(5π/3)
-√3/2
Simplify: cotβsecβcscβ
csc^2β
Convert -3π/4 radians to degrees
-135°
Find two coterminal angles (one positive, one negative) for π/4
9π/4 and -7π/4
Find the reference angle for 13π/8
3π/8
Find all values where cos(θ) = -1/2 (0 ≤ θ < 2π)
2π/3 and 4π/3
Simplify: cotΘ/ tanΘ
cot^2Θ