Are you saying the side is 6 inches? ie lenght of the base. i just dont think u have enough data there to work this out?
Use the trick x+ y+ z =0 and 6+8+z=0,...so z= -14
Answer:

Step-by-step explanation:
Divide both sides by 

Simplify:
; 
Answer:
14 knots
Step-by-step explanation:
We know the speed (55 knots) is 6 more than 3.5 times the winner of the monohull in the 2007 tournament.
So let's set the variable for the speed of the monohull to <em>m</em>. Now, let's set up an equation:

We can solve this by first subtracting 6 from both sides to get:

Dividing both sides by 3.5 we get:

That means that the top speed of the monohull in the 2007 tournament was 14 knots
Answer:
3/5
Step-by-step explanation:
sin theta=opposite/hypotenuse
4/5=opposite/hypotenuse
therefore opposite=4 and hypotenuse=5
for adjacent
using pythagoras theorem
a^2+b^2=c^2
opposite^2 + adjacent^2 =hypotenuse^2
4^2 + adjacent^2 =5^2
16 + adjacent^2 =25
adjacent^2 =25-16
adjacent =
adjacent=3
cos theta=adjacent/hypotenuse
=3/5
therefore the value of cos theta is 3/5