|
Which of the following is a reference angle for θ = 158∘? 22∘ 58∘ 202∘ -202∘ Which of the following is a reference angle for θ = 312∘? 78∘ -48∘ -78∘ 48∘ Which of the following is a reference angle for θ = 117∘? 297∘ 57∘ 83∘ 63∘ Which of the following is a reference angle for θ = 236∘? 54∘ 56∘ 74∘ 36∘ Which of the following is a reference angle for θ = -120∘? 30∘ 60∘ 240∘ 20∘ Evaluate: cos(-225∘) -√2/2 √2/2 √2 2 Evaluate: tan 225∘ -1 1 √3 √3/3 Evaluate: tan 330∘ -√3/3 √3 -√3 1 Evaluate: sin 240∘ -√2/2 -1/2 -1 -√3/2 Evaluate: cos 135∘ 1 √2/2 √3/2 -√2/2 Evaluate: sin 210∘ 1/2 √3/2 -1/2 -√3/2 Evaluate: cos(-270∘) -1 0 1 Undefined Evaluate: cos 315∘ √2/2 √3/2 -√3/2 -√2/2 Evaluate: tan 405∘ √2/2 -1 -√2/2 1 Evaluate: sin 450∘ -1 0 1 Undefined Evaluate: cos (-135∘) √2/2 -1 -√2/2 √3/2 Which of the following is a reference angle for -225∘? 135∘ 65∘ -25∘ 45∘ Which of the following is a reference angle for 312∘? -48∘ 28∘ -12∘ 48∘ Which of the following is a reference angle for -25∘? 135∘ 65∘ -25∘ 25∘ Which of the following is a reference angle for 1280∘? 560∘ 200∘ 80∘ 20∘ |