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