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Sure, here is the revised description with all the links and additional text removed: Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a ...

Practise solving trigonometric equations in degrees or radians using CAST and its period to find other solutions within the range, including multiple or compound angles and the wave function.

Many students think they've solved a trig equation when they get one answer (one size of angle \(x^\circ\)). However there's often more than one answer expected so be aware of this. Let's remind ...