S is the circumcircle of △ABC. Bisectors of ∠A, ∠B, ∠C meet S at P, Q, R respectively. I is the incenter of △ABC.
1: Prove that I is orthocenter of △P QR.
2: Given m∠P = 70, m∠Q = 54, find m∠A.
3: Given BI = 6, BR = 8, BP = 10, find P R.
4: Given m∠P IR = 110, find m∠ABC.

You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function. how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?