An angle in standard position measures π/2radians, and p(0, 1) is on the terminal side of the angle. what is the value of the cosine of this angle? a. –1 b. 0 c. 1 d. undefined

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32