sin(a + b) & cos(a + b) - Discovery

Topic:Angles, Triangles, Trigonometric Functions

Directions are given in the applet below.

Use your results to write 2 new trigonometric identities from what you now see. After doing so, go to the following applet: http://tube.geogebra.org/m/1651617

New Resources

Untitled
Reflection = 180° Rotation about a Line
רישום חופשי
Reflection Across 2 Parallel Lines
Triangle with 3 Right Angles

Discover Resources

cutting a moon into six pieces
The Auto-magic Trigonometry + Pythagoras Questioner
LZ 8.1.5.2 Reflecting Points on the Coordinate Plane
ปริภูมิ 3 มิติ
NS1-04-CYU1 (Comparing powers)

Discover Topics

Quadratic Functions
Limits
Poisson Distribution
Rectangle
Square