Grade 10 - Trigonometry

(Sample Online worksheet)

Choose correct answer(s) from given choice

1)If cot θ = a/b and 0 > θ > 90, find value of cosec θ.
a. b.
c. d.
2)Simplify
a. sinθ cosθ b. 0
c. 1 d. tanθ + cotθ
3)(sinθ - cosecθ)(cosθ - secθ) = ?
a.  
1
tanθ + cotθ
 
b.  
1
tanθ - cotθ
 
c.  
1
cotθ + tanθ
 
d.  
-1
tanθ + cotθ
 
4)tan(2) tan(3) tan(4) tan(5) ... tan(88) = ?
a. 1 b. 2
c. 0.5 d. 0
5)Simplify
a. tanθ + cotθ b. sin2θ - cos2θ
c. tanθ - cotθ d. 1 + tanθ + cotθ
6)Simplify sin6x + cos6x + 3sin2x cos2x
a. -1 b. 1
c. 3 d. 2
7)If α + β = 90, simplify .
a. 0 b. cos α
c. sin α d. 1
8) = ?
a.  
2
1 - sin2θ
 
b.  
2
2 sin2θ - 1
 
c.  
2
1 - 2 sin2θ
 
d.  
2
1 + 2 sin2θ
 
9)[cos(20) cos(21) cos(22) ... cos(70) ] [cosec(20) cosec(21) cosec(22) ] = ?
a. 2 b. 0
c. 1 d. 0.5

Check True/False

10)sin 40 - cos 40 < 0
True    False
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