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January 30, 2015

January 30, 2015

Posted by **Maria** on Saturday, May 11, 2013 at 11:43pm.

a) how many solutions are possible?

b) in which quadrants would you find the solutions?

c) determine the related angle for the equation.

d) determine all the solutions for the equation

- Grade 12 Calculus -
**Steve**, Sunday, May 12, 2013 at 6:17amwe know that

cos π/6 = √3/2

and

cos(π±x) = -cos(x)

cos(2π±x) = cos(x)

- Grade 12 Calculus -
**helpless**, Wednesday, May 15, 2013 at 4:56amSteve is correct with the reasoning. Anyways, the answers are:

a) 2

b) I and IV

c) π/6 radians (30 degrees) and -π/6 (330 degrees)

d) 2nπ ± π/6 radians (n=any integer)

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