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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


Name: ___________________

Date:___________________

High School Mathematics - 2
10.18 Trignometry Review

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?
100 metres
36.85 metres
87.84 metres

Q 2: In triangle ABC, a = 8.4 cm, b = 7.6 cm and c = 9.2 cm. Calculate the area of triangle ABC.
50 sq. cm
30 sq cm
45 sq cm

Q 3: The angle of elevation of the top of a tower from a point 60m from its foot is 30o. Find the height of the tower.
100 m
20 m
2031/2 m

Q 4: Find the radian measure of 15o.
/4
/6
/12

Q 5: 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.
2:3:4
4:5:2
12:9:2

Q 6: Find the degree measure of 3/4.
42057l18ll
45o
35o

Q 7: 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?
200 metres
100 metres
240 metres

Q 8: 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

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Question 10: This question is available to subscribers only!


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