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CBSE Questions for Class 10 Maths Introduction To Trigonometry Quiz 1 - MCQExams.com

The value of 2tan30 is ________
  • 3.46
  • 3.56
  • 34.6
  • 3.48
The value of tanθ×cotθ= _____
  • 2
  • 0
  • 1
  • 1
Which of the following is equal to sinxsecx?
  • tanx
  • cotx
  • cosxtanx
  • cosxcosecx
  • cotxcosecx
The value of sinθ×cosecθ= _____
  • 2
  • 1
  • 1
  • 0
Who published the trigonometry in 1595?
  • William Rowan Hamilton
  • Hipparchus
  • Bartholomaeus Pitiscus
  • Newton
Choose the correct alternative answer for the following question.
cosec 45=?
  • 12
  • 2
  • 32
  • 23
If 3cosA=sinA, then the value of cotA is:
  • 3
  • 1
  • 13
  • 2
tan45=?
  • 1
  • 3
  • 0
  • can't be determined
The value of cos1o.cos2o.cos3o.....cos179o is equal to 
  • 1
  • 0
  • 1
  • 12
In ABC, B=90, sinC=35, then cosA= ______
  • 35
  • 45
  • 54
  • 53
If sin A=12 and cos B=12, then the value of (A+B) is equal to :
  • 0
  • 60
  • 90
  • 30
If cot \theta =\dfrac{7}{8}, then the value of tan^{2}\theta equals to :
  • \dfrac{8}{7}
  • \dfrac{49}{64}
  • \dfrac{64}{49}
  • \dfrac{7}{8}
The value of (sin 45^{\circ}+cos 45^{\circ}) is :
  • 1
  • \dfrac{1}{\sqrt{2}}
  • \dfrac{\sqrt{3}}{2}
  • \sqrt{2}
If 2 \cos\theta+ \sin\theta=1, then the value of 4 \cos\theta + 3 \sin\theta is equal to
  • 3
  • -5
  • \dfrac {7}{5}
  • -4
\cos ^{2} 60^{\circ}+\sin ^{2} 30^{\circ} = \displaystyle \frac{1}{a}
Then a=
  • 2
  • 3
  • 1
  • \dfrac{1}{2}
If \sec 4A = cosec (A-20^{\small\circ}), where 4A is an acute angle, find the value of A.
  • A = 32^{\small\circ}
  • A = 22^{\small\circ}
  • A = 41^{\small\circ}
  • A = 16^{\small\circ}
In the given figure, BC=15cm and \sin{B}=\dfrac{4}{5}, What is the value of AB?
552722_5a0bbbcb1d7841adbf436304c2f45174.png
  • 25cm
  • 20cm
  • 5cm
  • 4cm
Choose the correct option. Justify your choice.
\displaystyle 9{ \sec }^{ 2 }A-9{ \tan }^{ 2 }A=
  • 1
  • 9
  • 8
  • 0
If sin({ 90 }^{ 0 }-\theta )=\dfrac { 3 }{ 7 } , then cos\theta
  • \cfrac { 7 }{ 3 }
  • \cfrac { 3 }{ 7 }
  • \cfrac { -7 }{ 3 }
  • \cfrac { -3 }{ 7 }
If \tan \theta= \cot \theta, then the value of \sec \theta is :
  • 2
  • 1
  • \dfrac{2}{\sqrt{3}}
  • \sqrt{2}
If \sqrt{3}\,=\,1.732, find (correct to two decimal places) the value of each of the following :
sin\,60^{\circ} is 0.87
State true or false.
  • True
  • False
The value of cosec 30^{\circ} + cot 45^{\circ} is:
  • 2
  • 1
  • 3
  • -1
The value of 5cosec^{2}\theta -5cot^{2 }\theta is equal to:
  • 5
  • 1
  • 0
  • -5
If \theta =45^{\circ}, then the value of cosec^{2}\theta is
  • \dfrac{1}{\sqrt{2}}
  • 1
  • \dfrac{1}{2}
  • 2
For an acute angle \theta in a right angled triangle, \dfrac{1}{\sin{\theta}} =
  • \cos{\theta}
  • \cot{\theta}
  • \sec{\theta}
  • \text{cosec}\,{\theta}
What is the value of \displaystyle \sin { { 30 }^{ o } } \times co\sec{ 30 }^{ o }?
  • 1
  • 0
  • \displaystyle \frac { 1 }{ 2 }
  • 2
The value of \displaystyle \tan { { 45 }^{ o } } \times \cot{ { 45 }^{ o } } is :
  • 0
  • 1
  • 2
  • \displaystyle \frac { 1 }{ 2 }
\dfrac{1}{\cos{\theta}} =_____ , for an acute angle \theta in a right angled triangle.
  • \text{cosec}\,{\theta}
  • \sec{\theta}
  • \cot{\theta}
  • None of these
The value of \tan{\theta}\cdot\tan{(90-\theta)} is equal to
  • \sin^2{\theta}
  • 1
  • \cos^2{\theta}
  • 0
If \sec{2A}=\csc{(A-42^\circ)} where 2A is acute angle then value of A is
  • 44^\circ
  • 22^\circ
  • 21^\circ
  • 66^\circ
0:0:2


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