solving trig problems: sin 0 = 3/5, cos 0 = ?

Assuming that you actually meant "theta" instead of 0, you should:

1) Draw a right triangle. Knowing that sin(x) = opp/hyp , and given that sin(x) = 3/5 , you know that the opposite side and hypotenuse have lengths 3 and 5, respectively.

2) You can find the length of the missing side using the Pythagorean Theorem.

3) Knowing that cos(x) = adj/hyp , you can now state the ratio for cosine, using the numbers from your diagram.

Hope that helps![/tex]
 
Why would anyone put in a zero for theta :roll: . There are plenty of 'common sense' options. How about cos@. At least then we know it isn't 0.
 
You must log in or register to reply here.
Top