Pythagorean theorem is

and using that sin is opposite/hypotenuse, you can find the third side of the triangle.

now you know adjacent is 60, so cos=60/61
Answer:
3
Step-by-step explanation:
Common factors : what make up a number (they will be all prime)
6 - 2, 3
9 - 3,3
the common factor is three (its what they have in common)
Answer:
I found the x values. Figure out the lengths by substituting the x-values!
Step-by-step explanation:
Feel free to ask if you don't understand what I'm doing here
Step-by-step explanation:

Theorem: If two chords intersect within a circle, then the product of the lengths of the segments (parts) of one chord is equal to the product of the lengths of the segments of the other chord.
In oyur case,

Solve this equation to find x:

Answer: 6, choice B.