Melody

This might give you just a little bit of an idea of what trigonometry is about.

http://www.mathsisfun.com/algebra/trigonometry.html

inverse sine and arc sin are the same thing

$$sin^{-1}(ratio)=asin(ratio)=\theta$$

You use inverse trig when you have the ratio and you are looking for the angle.

One complete revolution is $$360^0$$   or  $$2\pi\:\: radians$$

There is no equal sign ?????  CPhill has assumed it equals 0 

Thanks Alan

Hi Jeyden,

x/2 is half of x.  (Yours is upside down)

-5x=5/2+1

-5x=7/2

x=-7/10

$${\frac{{\mathtt{1.3}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{3\,500\,000}} = {\mathtt{45\,500}}$$

$$log_{10}6 = \frac{log_4 6}{log_4 10}$$

I want to come back to this question because I want to present it better but

n=1 , x=1/3 = n/[3+9(n-1)]

n=2 , x=2/12

n=3 , x=3/21

n=4 , x=4/30

n=5 , x=5/39

Hi username, Welcome to Web2.0calc forum.  We hope you like it here.

Thanks for answering username but you need to show your working otherwise no one can learn anything!

$$\frac{33}{50}\times\frac{1}{100}\\\\
=\frac{33}{5000}\\\\
or\\\\
=\frac{66}{10000}\\\\
=0.0066$$