Trigonometric Functions


 ExcelExcel - Inverses
SineSINASIN
CosineCOSACOS
   
TangentTANATAN
CoTangentCOT (1 / TAN)ACOT
   
SecantSEC (1 / COS) 
CosecantCSC (1 / SIN) 



Example 1

Lets assume a = 10 and b = 25


What is the length of side c ?

Using Pythagoras Theorem which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.


What is the size of the angle x ?

Remember that all the functions return radians so this is converted to degrees in cell "B3".


What is the size of the angle y ?

Remember that all the functions return radians so this is converted to degrees in cell "B3".


Example 2

Lets assume x = 33, y = 57 and c = 18


What is the length of side a ?


What is the length of side b ?





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