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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 angle of elevation of the top of a tower which is yet incomplete at a point 120 metres from its base is 45o. How much higher should it be raised so that the elevation at the same point may become 60o?
36.85 metres
100 metres
87.84 metres

Q 2: A vertical flagstaff stands on a horizontal plane from a point distant 150 metres from its foot, the angle of elevation of its top is found to be 30o, find the height of the flagstaff.
100 metres
100.4 metres
113.4 metres

Q 3: The angles of a triangle ABC are in AP and b:c = 31/2:21/2. Find angle A.
60 degrees
45 degrees
75 degrees

Q 4: Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length 10 cm
2/15
4/15
3/15

Q 5: Find the degree measure of the angle subtended at the centre of a circle of diamter 200 cm by an arc of length 22cm.
45o
12o36l
33o

Q 6: What is the angle of elevation of the sun when the length of the shadow of a pole is 31/2 times the height of the pole?
90o
60o
30o

Q 7: In triangle ABC , if 2 cos A/a + cos B/b + 2 cos C/c = a/bc + b/ca. find angle A
90 degrees
45 degrees
30 degrees

Q 8: Show that cot x.cot 2x - cot 2x cot 3x - cot 3x cot x = 1
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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