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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.
Answer:

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

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

Q 4: In triangle ABC, a = 50, c = 60, b = 100 degrees, find b.
84.5
80
85

Q 5: Find the length of an arc of a circle of radius 10 cm which subtends an angle of 45o at the centre.
7/4
5/4
3/4

Q 6: Solve the triangle ABC given that A = 67o, b = 3 cms, c = 2 cms.
a = 5 cm, B = 70o19l, C = 39o 41l
a = 2.88 cm, B = 73o19l, C = 39o 41l
a = 2 cm, B = 73oC = 39o 41l

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

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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