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After a windstorm, a leaning pole makes a 75° angle with the road surface. The pole casts a 15-foot shadow when the sun is at a 45° angle of elevation. About how long is the pole?
A
11.0 ft.B
12.2 ft.C
16.7 ft.D
20.5 ft.22
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What are the possible remaining angle measures in triangle ABC with ?
A
and
B
m angle B similar to 121 degrees, m angle C similar to 19 degrees
C
m angle B similar to 59 degrees, m angle C similar to 81 degrees
D
No triangle can be formed with these measures.23
Triangle XYZ has vertices X(–1, –1), Y(–2, 1), and Z(1, 2). What is the approximate measure of angle Z?
A
37.2°B
61.5°C
78.5°D
81.3°24
Which values of x and y would make the following expression represent a real number?(4 + 5i)(x + yi)
A
x = 4, y = 5B
x = –4, y = 0C
x = 4, y = –5D
x = 0, y = 525
Which equation demonstrates the additive identity property?
A
(7 + 4 i) + (7 minus 4 i) = 14
B
(7 + 4 i) + 0 = 7 + 4 i
C
(7 + 4 i) (1) = 7 + 4 i
D
(7 + 4 i) + (negative 7 minus 4 i) = 0
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