1. Relative to the acute angle , the three sides of a right triangle are the ________...

Question:

1. Relative to the acute angle , the three sides of a right triangle are the ________ side, the ________ side, and the ________.
2. Cofunctions of ________ angles are equal.
3. An angle of ________ represents the angle from the horizontal upward to an object, whereas an angle of________ represents the angle from the horizontal downward to an object.