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Trigonometry in Excel
A51=25.0
B51=21.5407 C51=42.03 Degrees In E51 =IF(OR(A51="",B51="",C51=""),0,DEGREES(ATAN(A51*SI N(RADIANS(C51))/(B51-A51*COS(RADIANS(C51)))))) The answer is 79.935 Degrees The formula above works well because the result is less than 90 Degrees But in the next scenario: A51=76.673 B51=47.214 C51=9.50 Degrees I get -24.01 Degrees The answer should be 155.99 Degrees. Can someone help with this one. Many Thanks in advance. Serge |
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