Here's the revised YouTube video description without the links: Learn how to use the double angle identities to solve ...

Let's remind ourselves of what the sine graph looks like so that we can see how many solutions we should be expecting: Therefore, from the graph of the function, we can see that we should be expecting ...

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. Learn ...