Question $1($Mandatory$)(1$ point$)$

The attached picture represents the LDC digital display of a Total Station Instrument.

What is the vertical angle between the zenith and the target point read at this station?

$120{10}^{\text{'}}{00}^{\text{'}\text{'}}$

$80{30}^{\text{'}}{15}^{\text{'}\text{'}}$

$360{00}^{\text{'}}{00}^{\text{'}\text{'}}-120{10}^{\text{'}}{00}^{\text{'}\text{'}}=239{50}^{\text{'}}{00}^{\text{'}\text{'}}$

$180{00}^{\text{'}}{00}^{\text{'}\text{'}}-80{30}^{\text{'}}{15}^{\text{'}\text{'}}=99{29}^{\text{'}}{45}^{\text{'}\text{'}}$

none of the above