Please don't double post questions. The answer is given here: Double angle trigonometry
Hi guys, I am new to this forum and really need some help.
I have been trying to complete a maths assignment for my college work but have come across a question that I am totally stuck on and my lecturer wont help me!!
Can someone help me please?!?!
The question is:
Give the exact value for the following:
If someone could please please help me..
I need to know the working and each step that was taken to get to the final answer....