Astatement we accept as true without proof is a?

Question and answers are in the attached picture. you so much in advance.

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

Harry and jay are both flying on the same plane with an airline that randomly assigns seats to passengers. of the 182 total seats on the plane, 62 are window seats, 58 are middle seats, and the rest are aisle seats. what is the approximate probability that both harry and jay will be assigned aisle seats on the same plane? a. 11.48% b. 3.3% c. 2.08% d. 26.26%