Please list help please

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?