Homework Help: grade 12 trig

Posted by juliet on Thursday, March 11, 2010 at 2:52pm.

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

grade 12 trig - FredR, Thursday, March 11, 2010 at 7:33pm
cos(A) -1 = 0
or
cos(A) = 1
arccos(1) = A = 0
grade 12 trig - jake, Monday, December 6, 2010 at 10:07am
cot 17= 3.2709 what does tan of 73 equal

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