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Introduction to Trigonometry
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Sinθ equals to
1⁄cosθ
1⁄tanθ
1⁄secθ
1⁄cosecθ
Cosθ equals to
1⁄tanθ
1⁄cosecθ
1⁄secθ
1⁄cotθ
If length is 52 cm and θ is 45°, radius should be
49 cm
56.7 cm
60 cm
66.21 cm
Cotθ equals to
1⁄cosecθ
1⁄secθ
1⁄tanθ
1⁄cosθ
In an angle, common end point is known as
initial side
vertex
terminal side
point of intersection
Area of sector with radius ‘r’ is measured by
2r⁄θ
1⁄2r
2r + θ
1⁄2 × r²θ
Value of 240° into radians should be
4π⁄3
π⁄6
3π⁄4
π⁄4
Angles between 0° and 90° lies in
3rd quadrant
1st quadrant
4th quadrant
2nd quadrant
System in which angles are measured in radians is called
CGS system
circular system
sexagesimal system
MKS system
Union of two non-collinear rays with some common end point is called
Angle
vertex
radius
degree
We can divide circumference of a circle into
180 equal arcs
270 equal arcs
90 equal arcs
360 equal arcs
A part of circumference of a circle is called
radius
arc
Segment
sector
Cosec²θ - cot²θ equals to
tanθ
-1
1
π radians are equal to
90°
270°
360°
180°
Tanθ equals to
1⁄cosecθ
1⁄cosθ
1⁄secθ
1⁄cotθ
1 + cot²θ equals to
sin²θ
sec²θ
cos²θ
cosec²θ
If θ is 180° and radius is 4.9 cm, length should be
10 cm
13.6 cm
16 cm
15.4 cm
Value of 3π⁄4 into degrees should be
135°
90°
120°
150°
Cosecθ equals to
1⁄cotθ
1⁄cosθ
1⁄secθ
1⁄sinθ
2π radians are equal to
180°
270°
360°
90°
1
2
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