Which equation can be used to find the length of AC?
А
10 in.
b
40°
B
a
(10) sin(40°) = AC
(10)cos(40°) = AC
10
= AC
sin(40)
10
= AC
COS(40)

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).