#1**0 **

Let the orthocenter be denoted by O

EC = 11.59110992

EO = 1.793150945

CO = 9.797958975

I don't know how to write the length of EC in that particular form.

This is all I could've done.

Guest Mar 4, 2021

#2**+1 **

Steps

1) Draw a bigger pic and put all the given info on it.

2) Every angle there is easy to find, find them all.

3) consider triangle EBC

Sin EBC = EC/12

angle EBS = angle EBD+angle DBC

so

\(sin(\angle EBD+\angle DBC)=\frac{EC}{12}\)

You will need to use the sin (A+B) formula to solve this.

Now try filling in all the blanks for yourself.

Melody Mar 4, 2021