Question 749600
please help me on this: Solve the following equations for x, if 0 ≤ x ≤ 2pi 
a) sinx=(-1/2)
x=7&#960;/6, 11&#960;/6 (Q3 and Q4 where sin<0)
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b)sqrt(2)x= -1
??
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c) 3tan + sqrt(3)= 0
tanx=-&#8730;3/3
x=5&#960;/6, 11&#960;/6  (Q2 and Q4 where tan<0)
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d) 8cos^2= 4 
cos^2x=4/8=1/2
cosx=1/&#8730;2
x=&#960;/4, 7&#960;/4 (Q1 and Q4 where cos>0)