How to solve these two problems ？

8)   is -0.896 radians

9) length of arc is 41.91 cm

Solution:

8)

Given that,

is in quadrant 4

To find:

From given,

Thus value of is -51.34 degrees

Convert degrees to radians

Thus is -0.896 radians

9)

From given,

radius = 15.4 cm

The length of arc when angle in radians is:

Thus length of arc is 41.91 cm

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.