Question Solve the equation θ=67πAlternative Form θ≈3.665191 Evaluate θ=210∘Solution θ=67πAlternative Form θ≈3.665191 Show Solution Rewrite the equation 3y=3×x Evaluate θ=210∘Calculate θ=67πUse substitution xy=tan(67π)Calculate the trigonometric value xy=33Multiply both sides of the equation by LCD xy×3x=33×3xSimplify the equation More Steps Evaluate xy×3xSimplify y×3Use the commutative property to reorder the terms 3y 3y=33×3xSolution 3y=3×x Show Solution Find the coterminal angle θ′=−150∘ Evaluate θ=210∘Find a least negative angle coterminal with 210∘ by subtracting an integer multiple of the full rotation n×360∘ θ′=210∘−n×360∘,n∈ZTo get a least negative angle coterminal with 210∘,subtract 1 full rotation any number of times so that the resulting angle is least negative θ′=210∘−1×360∘Multiply the numbers θ′=210∘−360∘Solution θ′=−150∘ Show Solution Find the reference angle θ′=60∘ Evaluate θ=210∘The terminal side of 210∘ lies in the third quadrant,so the reference angle is 270∘−210∘ θ′=270∘−210∘Solution θ′=60∘ Show Solution Graph