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Step 1 The two sides we know are Adjacent (6,750) and Hypotenuse (8,100).

Step 2 SOHCAHTOA tells us we must use Cosine.

Step 3 Calculate Adjacent / Hypotenuse = 6,750/8,100 = 0.8333.

Step 4 Find the angle from your calculator using cos-1 of 0.8333:

check this out: https://www.mathsisfun.com/algebra/trig-finding-angle-right-triangle.html

Thanks, coolioandepic........that's very helpful....!!!!