Find the median of the following set of numbers: 28, 29, 39, 38, 33, 37, 26, 20, 15, 25
33
29.5
29
28.5
28
Correct answer is D
15, 20, 25, 26, 28, 29, 33, 37, 38, 39
median = \(\frac{28 + 29}{2}\)
= 28.5
250m
353m
354m
433m
500m
Correct answer is E
\(\tan 45 = \frac{x}{500}\)
\(x = 500 \tan 45\)
= \(500 m\)
20m
40√3m/3
20√3m
40√3m
60cm
Correct answer is B
\(\tan 30 = \frac{x}{40}\)
\(x = 40 \tan 30 = \frac{40}{\sqrt{3}}\)
= \(\frac{40\sqrt{3}}{3} m\)
If sin x = 12/13, where 0° < x < 90°, find the value of 1 - cos\(^2\)x
25/169
64/169
105/169
144/169
8/13
Correct answer is D
\(\sin x = \frac{12}{13}\)
\(\cos x = \frac{5}{13}\)
\(\cos^{2} x = (\frac{5}{13})^2 = \frac{25}{169}\)
\(1 - \cos^{2} x = 1 - \frac{25}{169}\)
= \(\frac{144}{169}\)
cos 115o
cos 255o
cos 285o
-sin165o
-sin 255o
Correct answer is C
No explanation has been provided for this answer.
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