A Sample of Air at 35 degrees Celsius has a relative humidity of 15%. How do you find the dew point temperature?

http://einstein.atmos.colostate.edu/~mcnoldy/Humidity.html

OR see calculating dew point here:
http://en.wikipedia.org/wiki/Dew_point

independent variable

variable
dependent variable
and the controlled variable.
what are the definitions and some examples.

To find the dew point temperature, you'll need to calculate using the temperature (in Celsius) and relative humidity. There are several methods to calculate dew point temperature, but one commonly used formula is the Magnus-Tetens approximation.

The formula for calculating the dew point temperature using relative humidity is:

Td = (T - ((100 - RH) / 5))

where:
Td = Dew point temperature (in Celsius)
T = Temperature (in Celsius)
RH = Relative Humidity (in percentage)

Let's substitute the given values into the formula:

T = 35 degrees Celsius
RH = 15%

Td = (35 - ((100 - 15) / 5))
= (35 - (85 / 5))
= (35 - 17)
= 18 degrees Celsius

Therefore, the dew point temperature is 18 degrees Celsius.