2 n - 5 = 3 does n=4?
2 answers:
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The equation that correctly uses the law of cosines to solve for the missing side length of trianglepqr is <u>8^2 = 7^2 +11^2 - 2(7)(11) cos <P</u>
<h3>The cosine rule formula</h3>For us to use the cosine formula, an angle must be situated between two sides of the triangle.
According to the rule;
c^2 = a^2 + b^2 - 2ab cos C
From the given diagram, if cos<P is the reference angle, then;
a = 11
b = 7
c = 8
Substiute
8^2 = 7^2 +11^2 - 2(7)(11) cos <P
Hence the equation that correctly uses the law of cosines to solve for the missing side length of trianglepqr is <u>8^2 = 7^2 +11^2 - 2(7)(11) cos <P</u>
Learn more on law of cosine here: brainly.com/question/8288607
The linear function that represent the timing device is given by d = 86t
<h3>Linear equation</h3>A linear equation is in the form:
y = mx + b
where y, x are variables, m is the slope of the line and m is the y intercept.
Let d represent the distance in feer and t represent the time in seconds. Hence:
- Using the points (0, 0) and (9, 774)
The linear function that represent the timing device is given by d = 86t
Find out more on linear equation at: brainly.com/question/14323743