Pythagorean identities: sin?(8)+ cos2(0) = 1
Which statement(s) are true based on the
Pythagorean identities?
sin? 8 = 1+cos e
tan?(0)+1= sec?(0)
1 = sec28-tan?
1 + cot? (0) = csc?(0)
cot?e=csc26-1
1-tan? 6 --sec?
-cos= sin? 8-1
DONE

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.