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A way to prove tg(2x)=(2tg(x))/(1-tg^2x)
Author:
Ali Jradi
Topic:
Trigonometry
GeoGebra
New Resources
Taylor Polynomial
alg2_05_05_01_applet_exp_flvs
Road Runner (beep, beep)
bearing HK
alg2_05_05_01_applet_exp_2_flvs
Discover Resources
compound
GeoLab
Physical Pendulum Pivoted From Arbitrary Point
Mystery Quadrilateral #3
Interior Angles of Polygons
Discover Topics
Cosine
Means
Reflection
Linear Programming or Linear Optimization
Scalene Triangles