Answer:
C. x = 5, y = 2
Step-by-step explanation:
Simply plug in each given term in the answer choices, evaluate, then find out which two will make the system of equations authentic, or genuine.
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D. bottom right
Frequency is added here and found out!?
Option C:
x = 90°
Solution:
Given equation:

<u>To find the degree:</u>

Subtract 1 + cos²x from both sides.

Using the trigonometric identity:




Let sin x = u

Factor the quadratic equation.

u + 2 = 0, u – 1 = 0
u = –2, u = 1
That is sin x = –2, sin x = 1
sin x can't be smaller than –1 for real solutions. So ignore sin x = –2.
sin x = 1
The value of sin is 1 for 90°.
x = 90°.
Option C is the correct answer.
Answer:
The first Answer is
x-min = 0, x-max = 20
What is the best window range of y-values to find the solution?
y-min = 20 , y-max = 40
What is the solution?
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