Solve each equation for the variable in red #11
1 answer:
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Answer:
d) 86.2 degrees
x = 86.20°
Attached is the image used in the question;
Step-by-step explanation:
Applying the law of cosine;
Cos C = (a² + b² - c²)/2ab
Where;
Angle C = x
c = 13 ft
b = 9ft
a = 10ft
Substituting into the equation;
Cos x = (10² + 9² - 13²)/(2×10×9)
Cos x = 0.0667
x = cos⁻¹(0.0667)
x = 86.20°
<span><u><em>The correct answer is: </em></u>
1000.
<u><em>Explanation</em></u><span><u><em>: </em></u>
We divide to find the answer to this: </span></span>
<span><span>. When we are dividing by 10, we can move the decimal to the left one place; doing this gives us 1000.</span></span>
1000.
<u><em>Explanation</em></u><span><u><em>: </em></u>
We divide to find the answer to this: </span></span>