Ready for some more blogssssss?
Like I said in my earlier blog, chapter 10 is strictly formulas. It is a very easy concept once you know them all because all you will have to do is replace things. Today i am going to focus on double angles. I find these easier to work with because there is less simplifying to be done. Why this picture is so huge and refuses to get smaller, I am unsure of. 
I'm going to show you an example.
1. If sine A= (3/5), find Sin 2A...
1. Find the formula you need to use:
Sin 2A=2sinA cosA
2. Make a triangle to find out what cosA is:
Sin 2A=2(3/5)(4/5)
3. Simplify:
Sin 2A=24/25
And that is how you do a Double Angle problem. I hope you learned something new this week! thanks
Carleyyyy :)
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