HELP I NEED BOTH OF THESE QUESTIONS ANSWERD AND GRAPHED ON A PAPER for 20 POINTS ! Will Mark u brainlist

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]