# angles in standard position   127 videos

• #### Instantaneous Velocity

##### CalculusThe Derivative

How to estimate the instantaneous velocity of an object at t=2 by computing average velocities over shorter and shorter intervals of time.

average velocity instantaneous velocity change in position change in time limits
• #### Trapezoid Properties

##### GeometryPolygons

How to identify a trapezoid and its special properties.

parallel sides isosceles trapezoid base angles base
• #### Kite Properties

##### GeometryPolygons

How to identify a kite and its special properties.

kite diagonals consecutive sides vertex angle non vertex angle bisect perpendicular
• #### Area of Kites and Rhombuses

##### GeometryArea

How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.

kite area diagonals consecutive sides vertex angle non vertex angle bisect perpendicular rhombus
• #### Optimization Using the Second Derivative Test

##### CalculusApplications of the Derivative

How to compute the average velocity of an object moving in one dimension from a graph of its position vs. time.

• #### Types of Triangles

##### GeometryGeometry Building Blocks

How to classify a triangle based on its side lengths and angle measures.

equiangular equilateral isosceles right acute obtuse triangles
• #### Equiangular Polygon Sums

##### GeometryPolygons

How to find the measure of one angle in any equiangular or regular polygon.

equiangular regular congruent triangles sum
• #### Trigonometric Ratios: Sine

##### GeometryBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### GeometryBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### GeometryBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Inverse Trigonometric Functions

##### GeometryBasic Trigonometry

How to use inverse trig functions to find angles in right triangles.

trigonometry right triangle inverse sine cosine tangent
• #### Using Sine to Calculate the Area of a Triangle

##### GeometryBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine
• #### Trigonometric Ratios: Sine

##### TrigonometryBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### TrigonometryBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### TrigonometryBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Inverse Trigonometric Functions

##### TrigonometryBasic Trigonometry

How to use inverse trig functions to find angles in right triangles.

trigonometry right triangle inverse sine cosine tangent
• #### Using Sine to Calculate the Area of a Triangle

##### TrigonometryBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine
• #### Trigonometric Ratios: Sine

##### PrecalculusBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### PrecalculusBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### PrecalculusBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA