law of sines   7 videos

• The Law of Sines

GeometryBasic Trigonometry

How to define the law of sines.

law of sines ratios triangles
• The Law of Cosines

GeometryBasic Trigonometry

How to define and use the law of cosines.

law of cosines ratios triangles
• 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
• 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
• Inverse Trigonometric Functions

GeometryBasic Trigonometry

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

trigonometry right triangle inverse sine cosine tangent
• 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