Trigonometry and the Calculator

What mode should you have your calculator in for trigonometry unless otherwise specified?

• RAD (radians)

• GRAD

• DEG (degrees)

• FIX

Calculate correct to three decimal places: sin 27◦

• 0.454

• 0.453

• 0.500

• 0.400

Calculate correct to three decimal places: cos 85.7◦

• -0.639

• 0.074

• 0.639

• 0.075

• 0.71

• 45.58

• 0.80

• 0.01

• 0.5

• 60

• 30

• 1

• 0.6

• 0.56

• 0.64

• 36.87