Asked by j
Solve in radians.
1) sin2X = 1/2
2) tan2 (X + pi/2) = 1
3) 5 - 3sec (X - pi/4) = -1
1) sin2X = 1/2
2) tan2 (X + pi/2) = 1
3) 5 - 3sec (X - pi/4) = -1
Answers
Answered by
Steve
clearly 2x = pi/6
tan(x+pi/2) = -cot(x)
3sec(x-pi/4) = 6
sec(x-pi/4) = 2
cos(x-pi/4) = 1/2
x-pi/4 = pi/3
now just look in all the quadrants that work.
tan(x+pi/2) = -cot(x)
3sec(x-pi/4) = 6
sec(x-pi/4) = 2
cos(x-pi/4) = 1/2
x-pi/4 = pi/3
now just look in all the quadrants that work.
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