PLZ HELP!

the measure of angle 0 is 7pi/4. The measure of its reference angle is __°, and tan 0 is __.

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges

Charlie tosses five coins.what is the probability that all five coins will land tails up.