Please help!!: 1. Use the definitions of the trigonometric ratios to find the value of sin45°, cos45°, and tan45°.
A. sin45°=1, cos45°=1, tan45°=2√2

B. sin45°=2√, cos45°=2√, tan45°=2√2

C. sin45°=2√2, cos45°=2√2, tan45°=2√

D. sin45°=2√2, cos45°=2√2, tan45°=1

2. Use the definitions of the trigonometric ratios to find the value of sin30°, cos30°, and tan30°
A. sin30°=3√, cos30°=2√, tan30°=2√2

B. sin30°=12, cos30°=3√2, tan30°=3√3

C. sin30°=3√3, cos30°=12, tan30°=3√2

D. sin30°=12, cos30°=3√2, tan30°=2√

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

In which quadrant does the point lie? write the coordinates of the point. a. quadrant ii; (–2, –4) b. quadrant iii; (2, 4) c. quadrant iii; (–2, –4) d. quadrant iv; (–4, –2)