Solve Trig equations

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tan(4x) = -1

-11.25

sin x = -0.71

-45.2

tan x = -1.61

-58.2

2sin^2x - sinx-3 = 0

-90

2 tan^2(x) + 5tan x = 0

0, -68.2

sinx-2sinxcosx = 0

0, 60

cos^3 - cos x =0

0, 90, 270

sin (2x) = 0.61

18.8

sqrt(2)sin(2x) = 1

22.5, -45

cos(2x) = 1/2

30

4cos^2x -3 = 0

30, 150

Sin x = 0.61

37.6

cos x =

67.0

cos(x/2) = sqrt(2)/2

90

sin(x/2) -1 = 0

90


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