Giovanna and Vivian are discussing square root approximations. They are trying to figure out the square root of 7 without a calculator. Giovanna thinks it is about 2.5 . Vivian thinks it is about 3.5 . Who has the more accurate approximation?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart