Key Words
These angles have measures that add up to 90 degrees.
What are Complimentary Angles?
This tool can be used to calculate the side length of a right triangle, given two known side lengths.
What is the Pythagorean Theorem
This is the radius of a unit circle.
This is the length of a diagonal of a square with side lengths of 3ft.
What is 3 times the square root of 2 feet?
This states that the sum of the three angle measures in any triangles must be 180 degrees.
This word describes two triangles with angles of equal measure.
This tool can be used to find a missing hypotenuse length of a right triangle, given an angle and the length of the leg next to the given angle.
What is Cosine?
This equals 180 degrees
What is pi?
This is the length of the hypotenuse of a 30/60/90 right triangle with a short leg of length of 4 inches.
What is 8 inches?
This is equivalent to the cosine of theta.
What is the sine of 90 - theta
This is the inverse function of tangent, equal to one divided by the tangent.
What is arctan?
This tool can be used to find the length of the radius of a circle centered at the origin, given the x- and y- coordinates of a point on the circle.
What is the Pythagorean Theorem?
This equals 3 pi /4 radians.
What is 135 degrees?
This is the length of the long leg of a 30/60/90 right triangle whose hypotenuse is 10 ft.
What is 5 times the square root of 3 ft?
This is equivalent to the x-coordinate on a unit circle squared plus the y-coordinate on a unit circle squared (x2 + y2)
What is 1?
This states that the angle measures of any triangle sum to 180 degrees.
What is the Triangle Angle Sum Theorem?
This tool can be used to calculate the measure of an angle created by a leg and the hypotenuse of a right triangle, given the lengths of the hypotenuse and the leg opposite this angle are given.
What is arcsin?
This equals 30 degrees.
What is pi/6 radians?
This is the angle measure who's tangent is 1.
What is 45 degrees?
This is the cosine of 90-theta when the sine of theta is 1/2
What is 1/2?
A unit of angle, equal to an angle at the center of a circle whose arc is equal in length to the radius.
What is a radian?
This tool can be used to calculate the distance between a camera and the top of a building if the height of the building and the angle of the camera are known.
What is Sine?
This equals 5pi / 6 radians.
What is 150 degrees?
This is the angle measure who's tangent is 1 divided by the square root of three.
This ratio is equivalent to B/C given similar triangles ABC and XYZ.
What Y/Z?