Plsese help me this is a test

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.