Trigonometric ratios of angles in radians  Trigonometric Ratios and Angle Measures
Trigonometric ratios of angles in radians
Basic concepts:
 Combination of SohCahToa questions
 Find the exact value of trigonometric ratios
 ASTC rule in trigonometry (All Students Take Calculus)
 Converting between degrees and radians
Related concepts:
 Polar form of complex numbers
 Operations on complex numbers in polar form
Lessons

1.
Find the value

2.
Determine one positive angle and one negative angle that is coterminal with:

a)
sin 123°

b)
sin $123$

c)
cos $200$

d)
tan ${{13 \pi} \over 7 }$

e)
sin $\pi$

f)
sin $\pi$°

g)
sec 500 °
