Learn how to solve trigonometric equations in Higher Maths involving multiple or compound angles and the wave function in degrees or radians.

So we know that we need to solve a trigonometric equation - an equation to which the solution is the value of some angle. For the moment, we can put the details of the equation to one side because ...

I wish to thank Rich Lowry for his beautifully written and inspiring article (“What Trig Can Teach America,” PostOpinion, Sept. 9). VP candidate and new mother Sarah Palin, by her love … ...