emma1581
16.10.2020 •
Mathematics
If x to the power of 2 equals 10 what is the value of x
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Ответ:
We are required to use the function y=9sec theta to solve the question.
Given the y=9sec theta,
where;
y=distance
theta=angle=65
the length of the beam will be calculated as follows;
From the trigonometric rules;
sec theta=1/cos theta
therefore our function can be written as:
y=9/cos theta
y=9/(cos 65)
y=9/0.4226
y=21.2958
y=21.3 ft (1 d.p)
therefore our answer is B. 21.3 ft