How do you do it. it is so confusing and weird

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.