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Deducing the Relationship: A sin x + B sin x= R cos (x+a)
Author:
Hisham Amir
A video showing proof of an identity that is widely used in Trigonometry.
New Resources
Squares Question
apec
Congruent Sides & Angles in △s: Exploration
Pythagorean Template: Integer Legs
What Do You See? (2)
Discover Resources
Similar Triangles from Shadows
Geometry Applets
Section quelconque d'un cône
Radians
Incircle and circumcircle with growing bubbles.
Discover Topics
Rhombus
Step Functions
Bar Chart or Bar Graph
Scatter Plot
Special Points