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60° 120° 135° 150° 210° 30° is a reference angle for: (Select all that apply) 225° 240° 300° 315° 330° 30° 120° 135° 150° 210° 60° is a reference angle for: Select all that apply. 225° 240° 300° 315° 330° 60° 120° 135° 150° 210° 45° is a reference angle for: Select all that apply. 225° 240° 300° 315° 330° π/6 is a reference angle for which three? π/3 2π/3 3π/4 5π/6 7π/6 5π/4 4π/3 5π/3 11π/6 7π/4 π/3 is a reference angle for which three? π/6 2π/3 3π/4 5π/6 7π/6 5π/4 4π/3 5π/3 11π/6 7π/4 π/4 is a reference angle for which three? π/3 2π/3 3π/4 5π/6 7π/6 5π/4 4π/3 5π/3 11π/6 7π/4 The magnitude of the radius of a unit circle is 1 π r √3/2 √2/2 The sine of an angle is equal to r x y 1 theta How many degrees in a unit circle? 2π 180 π 1 360 The cosine of an angle is equal to 1 x y theta r For the unit circle, the sine is zero at: 180 degrees Both 0 and 180 degrees 0 degrees 90 and 270 degrees neither 0 nor 180 degrees For the unit circle, the cosine is 1 at: 0 degrees 270 degrees 180 degrees 90 degrees Both 90 and 180 degrees For the unit circle, if I add this many radians to an angle, the sin and cosine will remain the same -π/2 π -π π/2 2π The sine of 90 degrees equals -√2/2 1 0 √2/2 1/2 The cosine of 45 degrees equals √2/2 45 -√2/2 1/2 √3/2 390 degrees is co-terminal with 30 degrees -390 degrees 330 degrees -30 degrees The sine of π is undefined 1 0 √3/2 180 degrees The tan of π is undefined 1 0 √3/2 180 degrees π radians is co-terminal with which two? -π radians 1/2 radians 3π radians 3π/2 radians 2π radians 3π/4 radians equivalent to: 3π/2 radians 45 degrees 135 degrees 315 degrees 225 degrees Sine and Cosine are both negative in quadrant III IV I II
A) 2π B) 3π C) π/2 D) π E) 3π/2
A) 2π radians B) 360 degrees C) π/2 radians D) π radians The cosine is negative and the sine is positive in quadrant III I II IV The cosine of 225 degrees equals 45 √3/2 √2/2 -√2/2 1/2 -390 degrees is co-terminal with -30 degrees 330 degrees -330 degrees -390 degrees
A) 3π/2 radians B) 90 degrees C) 2π radians D) π/2 radians The cosine is negative and the sine is positive in quadrant: III II IV I Drag the parts of a triangle into the correct location to set up the trig ratio. sin(θ)= hypotenuse ? opposite ? Not used in sin function adjacent ? Drag the parts of a triangle into the correct location to set up the trig ratio. cos(θ)= hypotenuse ? adjacent ? Not used in cos function opposite ? Drag the parts of a triangle into the correct location to set up the trig ratio. tan(θ)= adjacent ? opposite ? Not used in tan function hypotenuse ? Drag the parts of a triangle into the correct location to set up the trig ratio. tan(θ)= cosθ ? sinθ ? Match the radian measure to the correct position around the unit circle. Drag and drop your answers onto the Circle 7π/6 ? 5π/6 ? π ? 5π/4 ? 3π/4 ? 4π/3 ? 2π/3 ? 3π/2 ? π/2 ? 5π/3 ? π/3 ? 7π/4 ? π/4 ? 11π/6 ? π/6 ? 0π ? 2π ? Match the coordinate point to the correct position around the unit circle. Drag and drop your answers onto the Circle (0, 1) ? (1/2, √3/2) ? (√2/2, √2/2) ? (√3/2, 1/2) ? (1, 0) ? What is the value of cos(5π/3)? What is the value of tan(3π/4)? What is the value of sin(π/3)? √3/2 ? 1/2 ? -1 ? What is the exact value of sin (7π/4)? What is the exact value of tan(7π/4)? What is the exact value of cos (7π/4)? √2/2 ? -√2/2 ? -1 ? |