How do we solve a trigonometric problem ?

If we want know CosT= ____

Screen Shot 2015-03-06 at 9.29.16 AM

First, we have to know what is Cos? Cos is Cosine and Cosine=Adjacent/hypotenuse.Screen Shot 2015-03-06 at 9.40.08 AMScreen Shot 2015-03-06 at 9.38.48 AM

Then, Now we know this ratio, so we can find it . But before we find it, we must write adjacent, opposite and hypotenuse on the triangle. I know hypotenuse is a longest side, opposite is the line cross from the angleT, and adjacent is next to the angleT.Screen Shot 2015-03-05 at 11.44.06 AM

Last, Now we put the number instead the letter.

Cos=adjacent/hypotenuse

Cos=20/52

cos=0.38

So CosT=0.38

Thank you for reading

By Haoliang

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s