Determine the angle between c= < 8, -3> and d= < 4, 10> . round your answer to 1 decimal place.

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?