Respuesta :
Answer:
2pi/3 and 4pi/3
Step-by-step explanation:
Solve for cosine and you will get cosx=-1/2. Using the unit circle find every point where the x value = -1/2 (since cosine is x). You will find that the angles where x = -1/2 are 2pi/3 and 4pi/3
The value of x = 2 π /3 for the equation 2cosx+5 =4.
What is Trigonometric Ratios?
Trigonometric Ratio are the ratios of the sides of a right-angled triangle, which are used in determining the angle and sides of the triangle.
The equation is 2cosx+5 =4
2cosx = -1
cos x = -1/2
X = π - cos⁻¹(x)
x = π - π /3
x = 2 π/3
Therefore, the value of x = 2 π /3 for the equation 2cosx+5 =4.
To know more about Trigonometric Ratios
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