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4 Answered Questions for the topic Trigonometric Equations

Trigonometric Equations Trigonometry Trigonometric Functions


Solve cos x = -2/3 for 0 ≤ x < 2π (round to the nearest hundredth of a radian)

I received the values 131.81 and 228.209 which is incorrect. I've tried to come up with the correct answer multiple times. Solve cos x = -2/3 for 0 ≤ x < 2π (round to the nearest hundredth of a... more
Trigonometric Equations Math Trigonometry


trigonometric equation help

sin^2(x) - 3sin(x) + 2 = 0 within [-4π, 4π]
Trigonometric Equations Math Trigonometry


how do i solve 4sec(x)+8=0

I know i have to isolate the variable, and when i do that i get sec(x)= -2 but i dont know where to go from there.
Trigonometric Equations Trigonometry


Solve the trigonometric equation

6cosxsinx - 3cosx - 4sinx + 2=0 for exact solutions in the interval x is more than or equal to 0 and less than or equal to 360°.    I've got it down to 3cosx-2 = 0 or 2sinx-1=0 but not sure where... more

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