Evaluate 4x2y + x when x = -1 and y = 7,
1 answer:
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a) The length of p is 21.4 cm
b) The measure of angle P is 45.6°
<h3>Trigonometry </h3>From the question, we are to determine the length of p
From the <em>Pythagorean theorem</em>, we can write that
30² = 21² + p²
p² = 30² - 21²
p² = 900 - 441
p² = 459
p = √459
p = 21.4 cm
∴ The length of p is 21.4 cm
b)
Measure of angle P
Using SOH CAH TOA
cos P = 0.7
P = cos⁻¹(0.7)
P = 45.6°
Hence, the measure of angle P is 45.6°
Learn more on Trigonometry here: brainly.com/question/17831932
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Answer:
x = 5, y = 2
Step-by-step explanation:
First, isolate y in the top equation.
Next, substitute y in the bottom equation.
Simplify.
Combine like terms.
Isolate x on one side.
Isolate x.
Substitute x into
Simplify.
Isolate y.