12. Determine the missing angle measures.
M<1
M<3

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

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

What is a correct first step in solving the inequality-4(3-5x)> -6x+9