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

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Rovnoběžnost rovin
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testing 123
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