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Return to Foundations of Science Mathematics 2e Student Resources
Chapter 3 Multiple choice questions
Trigonometry
Quiz Content
*
not completed
.
Which of the following is
not
true?
Angle = arc-length / radius.
correct
incorrect
A radian is 180/π degrees.
correct
incorrect
The angle depends on the units in which lengths are measured.
correct
incorrect
A right-angle is π/2 radians.
correct
incorrect
*
not completed
.
Which of the following is
not
true about trigonometric functions?
They are periodic.
correct
incorrect
They are related to the ratios of the sides of a right-angled triangle.
correct
incorrect
sin(Ω) = cos(90º-Ω) for 0 =Ω = 90º.
correct
incorrect
cos(0) = 0
correct
incorrect
*
not completed
.
For a small angle, |Ω|«1 (radian), which of the following is
not
true?
sin(Ω) ≈ Ω
correct
incorrect
cos(Ω) ≈ Ω
correct
incorrect
tan(Ω) ≈ Ω
correct
incorrect
tan(Ω) = sin(Ω) / cos(Ω)
correct
incorrect
*
not completed
.
A sin(Ω) + B cos(Ω) = µ sin(Ω+ø) where
µ
^{2}
= A
^{2}
+ B
^{2}
and tan(ø) = B/A.
correct
incorrect
µ
^{2}
= A
^{2}
+ B
^{2}
and tan(ø) = A/B.
correct
incorrect
µ = A + B and tan(ø) = B/A.
correct
incorrect
µ = A + B and tan(ø) = A/B.
correct
incorrect
*
not completed
.
Which of the following is
not
true?
cos(2Ω) = cos
^{2}
(Ω) - sin
^{2}
(Ω)
correct
incorrect
cos(2Ω) = 2 cos
^{2}
(Ω) - 1
correct
incorrect
cos(2Ω) = 1- 2 sin
^{2}
(Ω)
correct
incorrect
tan(2Ω) = 2 cos(Ω) sin(Ω)
correct
incorrect
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