Rational are number that dont repeat and you can make it into a fraction
irrational are numbers that go on forever and never stop
yes it is always coplanar with two intersecting lines.
Answer:
226.19
Step-by-step explanation:
You have to jusitfy the step that leads from sin (x) = a/c and cos(x) = b/c to sin^2 (x) + cos^2(x) = [a^2 / c^2] + [b^2 / c^2].
As you can see go from the first statement to the second by substituting the value of sin(x) by a/x and the value of cos(x) by b/c.
Then, the answer is the option b. substitution property of equality.
