ok i don't understand the whole sine cosine and tangent its confusing and i hate it
Draw yourself a right triangle and label the sides a, b and c. c is the hypotenuse.
Label tha corners A, B, and C. Angle A is opposite side a, etc. C is the right angle.
Then try to remember the definitions
sin A = a/c
cos A = b/c
tan A = a/b