Use the Quadratic Formula to Solve the Given Equation on the Interval

question 15

Multiple Choice

Use the Quadratic Formula to solve the given equation on the interval [ $0 , \frac { \pi } { 2 }$ ) ;then use a graphing utility to approximate the angle x.Round answers to three decimal places.​ $75 \cos ^ { 2 } x - 34 \cos x + 3 = 0$ ​

• A)x = 1.229,1.433
• B)​x = 1.227,1.422
• C)​x = 1.233,1.469
• D)​x = 1.231,1.451
• E)​x = 1.235,1.480

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Definitions:

Threshold

The level of intensity that must be exceeded for a certain reaction, phenomenon, result, or condition to occur or be manifested.

Neurotransmitters

Chemical messengers in the brain that transmit signals from one neuron to another, influencing mental processes and behavior.

Knob-like Terminals

The expanded areas at the end of axons that are responsible for releasing neurotransmitters into the synapse.

Action Potential

A rapid change in electrical charge across a neuron's cell membrane, allowing for the transmission of nerve impulses.