Trig Skills for Vectors
Science
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9 questions
Question 1
Multiple Choice
1 point
In in right angled triangle, the sine of the angle is defined by
A.sinx=O/A
B.sinx=O/H
C.sinx=H/O
D.sinx=A/H
E.sinx=H/A
Question 2
Multiple Choice
1 point
In in right angled triangle, the cosine of the angle is defined by
A.cosx=O/A
B.cosx=O/H
C.cosx=H/O
D.cosx=A/H
E.cosx=H/A
Question 3
Multiple Response
1 point
In in right angled triangle, the tangent of the angle can be defined in two ways, namely:
A.tanx=O/A
B.tanx=O/H
C.tanx=H/O
D.tanx=A/H
E.tanx=H/A
F.tan(x)= sin(x) / cos(x)
Question 4
Numerical Answer
1 point
What is the cos(R)? You only have to enter the magnitude (2SF).
Question 5
Multiple Choice
1 point
How can you find the length of PQ?
A.PQ = sin(R) x 8
B.PQ = sin(Q) x 8
C.PQ = sin(R) x 6
D.PQ = cos(R) x 8
E.PQ = cos(R) x 6
Question 6
Multiple Choice
1 point
Determine the length of t
A.96.6 m
B.103. 5 m
C.25.9 m
D.0.0026 m
E.390 m
Question 7
Numerical Answer
1 point
What is the height of this tree? Round your answer to two decimal places.
Question 8
Multiple Choice
1 point
To find the angle when you know the lengths of these sides of a right-angled triangle, you have to use
A.sin-1(x)
B.cos-1(x)
C.tan-1(x)
Question 9
Multiple Choice
1 point
The angle alpha equals to
A.45°
B.44°
C.35°