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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
Construct a Conic
Icosahedron1
Exploring the Derivative of a Quadratic Function
Quiz: Finding Average Rate of Change
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Discover Resources
RadianSinCosTanQCM2
Kosinuso grafikas
Falling Timber - Linear Horizontal Change
สุ่มโจทย์
Catriona's Circle in a Triangle
Discover Topics
Plane Figures or Shapes
Scalene Triangles
Root
Normal Distribution
Median Line