Unit Circle
Cosine of 90 degrees
What is 0?
Solve v2 + 2v - 8 = 0
What is -4 and 2?
Simplify the square root of (-144).
What is 12i?
Simplify 4i(-2 - 8i)
What is 32 - 8i?
Name two elements that a vector has.
What is magnitude and direction?
Sine of 150o
What is 1/2?
Solve n2 = 9n - 20
What is 4 and 5?
Simplify - (square root of (-81)).
What is -9i?
Multiply (2 + 3i)(2 - 3i).
What is 13?
Name the two points on a vector.
What is the initial point and the terminal point?
Tangent of 135o
What is -1?
A rectangle has one side that is 5 feet longer than the other side and has an area of 104 square feet. What are the rectangles dimensions?
What is 8 ft by 13 feet?
Simplify 2 + (square root of -96)
What is 2 + 4i(square root 6)?
Multiply (4 - 5i)(4 + i)
What is 21 - 16i?
Find the magnitude of the vector with an initial point at (10,2) and a terminal point at (4,6) in simplified form.
What is 2 square root 13?
Sine of 300o
What is - square root 3/2?
Solve 2x2 - 3x + 4 = 0
What is (3 +/- i(square root 23))/4?
Simplify - 1 - 8i - 4 - i
What is -5 - 9i?
Simplify 4/(-5 + i)
What is (-10/13) - (2i/13)?
Find the component form of the vector with an initial point at (-2, 9) and a terminal point at (-10, 7).
What is <-8, -2>?
Tangent of 270o
What is undefined?
An object is thrown up into the air from the roof of a building. Its height above the ground h (in feet) after t seconds is given by the equation h = 90 + 50t - 16t2. When will the object be 120 feet high?
What is 0.81 seconds and 2.32 seconds?
Simplify 5i * -i.
What is 5?
Simplify (-4i)/(9 + 9i)
What is -2/9 - 2i/9?
Write the component form of a vector with a magnitude of 12 and an angle of 68o.
What is <4.50, 11.13>?