cos20 x cos40 x cos80 = 0.0300 radians
= 0.125 degrees
(the value for radians is given to four decimal places, the value in degrees is exact)
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Find the value of Cos1o.cos2o.cos3o.cos4o......cos179o.Ans: Cos90o=0Therefore, Cos1o.Cos20,Cos30,cos40......Cos900.......Cos1790=0
cos(195) = -0.965925826289
The exact value of sec 4pi divided by 3 is 1/3.
The answer to the question is given in the question!If you want to find the value of an algebraic expression, then you need to substitute numerical values for each of the variables in the expression, and then calculate and simplify the result.
assuming that this means log5125=x, x=3.