Asked by juliet

If cos A-1=0, where 0<or= A< 2pi, then A=? The answer I got was pi/3,5pi/3. I don't know where I went wrong can you please help. thanks
Answered by FredR
cos(A) -1 = 0
or
cos(A) = 1
arccos(1) = A = 0
Answered by jake
cot 17= 3.2709 what does tan of 73 equal
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