Select all true statements . (remember the reference angle is the perspective from which the question or you are looking)

A. In a right triangle any angle can be used as the reference angle for sin/cos/tan

B. In a right triangle only the two acute angles can be used as the reference angle for sin/c cos/tan

C. In a right triangle the right angle can be used as the reference angle for sin/cos/tan

D. in any triangle any angle can be used as the reference angle for sin/cos/tan

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?