U1L6: Trigonometric Functions in Quadrants I-IV
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Find tan Θ, given that sin Θ = -4/5 and cos Θ > 0.
-4/3
Which of the following angles has a reference angle of 30°?
150°
Suppose Θ is an angle in standard position with cos > 0. In which quadrant(s) could the terminal side of the Θ lie? Select all that apply.
I IV
Which quadrant contains -11π/18 and what is the reference angle?
III, 7π/18
Which of the following trigonometric ratios has a value that is undefined?
sec 3π/2
