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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
Visualizing the Pythagorean Identity with Sine and Cosine
Tetrahedron String Art
Using Experimental Probability to Estimate π - Monte Carlo Method
Average Value
Making New Year's resolutions for 2026
Discover Resources
vmelecio Geometry CPA Final
Determinant of 3 x 3 Matrices by Geogebra #2
Two billiards in a rectangle
Flower by Vlad animated by GER
Discover Topics
Polynomial Functions
Vectors 2D (Two-Dimensional)
Subtraction
Limits
Plane Figures or Shapes