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