Eight and one sixth minus 3 and five sixth

8  1/6 - 3  5/6
First do the whole number: 8 - 3= 5
1            5            4              2
--    --     --    =      --   =        --
6            6            6              3

5 and 4/6th    Simplify 5 and 2/3rds 

the distance from point C to D is 7.75m

Step-by-step explanation:

I think your question missed key information, allow me to add in and hope it will fit the orginal one. Please have a look at the attached photo

A vertical flagpole, AB,has a height of 46m. The points B, C and D lie on level ground, and BCD is a straight line Point C is 21 m from the base of the flagpole. The angle of elevation of the top of the flagpole from point D is 58 degrees

How far apart are points C and D?

My

Given the infomation:

AB: 46mBCD is a straight lineBC = 21m

In triangle ABD, with angle of elevation from D to top of flag pole is 58 degrees.

<=>

<=> tan(58) =

<=> BD =

<=> BD =

<=> BD = 28.75

From the figure:

BD = BC + CD

<=> CD = BD - BC

<=> CD = 28.75 - 21 = 7.75m

So the distance from point C to D is 7.75m