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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

High School Mathematics - 2
10.18 Trignometry Review

Function 0o 30456090
sin 0/2 1/22/23/24/2
cos 4/2 3/22/21/20
tan 0 3/313undefined
sec 1 23/322undefined
csc undefined 2223/31
cot undefined 313/30

sin cos tan
0 0 1 0
90 1 0 infinity
180 0 -1 0
270 -1 0 infinity




Functions of angles in all quadrants in terms of those in quadrant 1
-A 900 A
P/2 A
1800 A
P A
2700 A
3P/2 A
3600 A
2P A
sin -sinA cos A sin A -cosA sin A
cos cos A sin A -cos A sin A cos A
tan -tan A cot A tan A cot A tan A
csc -csc A sec A csc A -sec A csc A
sec sec A csc A -sec A csc A sec A
cot -cot A tan A cot A tan A cot A

Q 1: The angular elevation of a tower from a point is 30 degrees at a point in a horizontal line to the foot of the tower and 100 metres near it is 60 degrees, find the distance of the first point from the tower.
86.6 metres
150 metres
100 metres

Q 2: If the shadow of a tower is 30 metres, when the sun's altitude is 30o, what is the length of the shadow when the sun's altitude is 60o?
240 metres
200 metres
100 metres

Q 3: In triangle ABC, a= 15 cm, B = 68 degrees, C = 43 degrees, find b, c and B.
A = 60 degrees, b = 4 cm, c = 9 cm
A = 60 degrees, b = 3 cm, c = 7 cm
A = 69 degrees, b = 4.89 cm, c = 10.96 cm

Q 4: The sines of the angles of a triangle are in the ratio of 4:5:6, find the ratio of the cosines of the angles.
12:9:2
2:3:4
4:5:2

Q 5: In a triangle ABC, a = 2, b = 3 and sin A = 2/3, find angle B.
80 degrees
75 degrees
90 degrees

Q 6: In triangle ABC , if 2 cos A/a + cos B/b + 2 cos C/c = a/bc + b/ca. find angle A
45 degrees
30 degrees
90 degrees

Q 7: cos 75o
Answer:

Q 8: Find the radian measure corresponding to -37o30l.
-5/8
-5/24
-5/4

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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