If;
A = Adjacent
O = Opposite
H = Hypotenuse
Then,
Sin Ф = O/H
Cos Ф = A/H
Therefore,
(Sin Ф)/Cos Ф) = (O/H)/(A/H) = (O/H)*(H/A) = O/A
Now,
tan Ф = O/A ----
Therefore, it is true that
tan Ф = SinФ/CosФ
Answer:

Step-by-step explanation:
The missing details are:

--- Midpoint of ST
Required
Determine the coordinates of S
To do this, we apply the mid-point formula:

Where


The equation becomes:



Multiply through by 2


By comparison:





Hence, the coordinates of S is:

26 27 28 29 30 so 25 24 23 22 21---so 30 is the awnser
Numbers greater than 5 are rounded up, and numbers 4 and lower are rounded down.
37.57 - This number is greater than 5 so we round up to 38.00 dollars.