Problem 1: If the elevation of point A is 9.722m, elevation of point B= 30.194m, slope distance is 85.473m, height of instrument= 1.652m, height of target(ht)= 1.390m as shown in the figure below. Calculate slope angle (a). Note: Show your answer in degrees/ minutes/ seconds format. 下 S = 85.473 m ht= 1.390m hi=1.652m GROUND Elevation B = 30.194 m Elevation A = 9.722m

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.