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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
Constructing an Isosceles Triangle with Given Side + Activities
VIDEO: How to Insert Image in GeoGebra
Line Reflection Questions V2
Constructing Equilateral Triangles + Activities
Constructing a Regular Hexagon + Practice
Discover Resources
true/def-points-on-a-circle1.ggb
Triangle Dilation
notes 11-13-15
power lines
รูปคลี่พีระมิด
Discover Topics
Conditional Probability
Planes
Straight Lines
Tangent Function
Inequalities