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CBSE Questions for Class 10 Maths Introduction To Trigonometry Quiz 4 - MCQExams.com

The value of sin2600+tan450cosec2450 is
  • 12
  • 14
  • 14
  • 12
tanθ(1+tan2θ)2+cotθ(1+cot2θ)2 is equal to

  • 2sinθ.cosθ
  • cosecθ.secθ
  • sinθ.cosθ
  • 2cosecθ.sinθ
Let x=(1+sinA)(1+sinB)(1+sinC),y=(1sinA)(1sinB)(1sinC) and If x=y then
  • x=cosAcosBcosC
  • y=sinAsinBsinC
  • y=cosAcosBcosC
  • x=sinAsinBsinC
If acosθbsinθ=c, then asinθ+bcosθ equals-
  • a2+b2+c2
  • a2b2c2
  • a2+b2+c2
  • ±a2+b2c2
If sin4x2+cos4x3=15, then:
  • tan2x=23
  • sin8x8+cos8x27=1125
  • tan2x=13
  • sin8x8+cos8x27=2125
If x=rsinθcosϕ,  y=rsinθsinϕ and z=rcosθ, then the value of x2+y2+z2 is independent of: 
  • θ,ϕ
  • r,θ
  • r,ϕ
  • r
If sinA=acosB and cosA=bsinB, then (a21)tan2A+(1b2)tan2B   is equal to
  • a2b2b2
  • a2b2a2
  • a2+b2b2
  • a2+b2a2
If sinθ+cosecθ=2,  then the value of sin8θ+cosec8θ is equal to
  • 2
  • 28
  • 24
  • none of these
If tanA+cotA=4, then tan2A+cot2A is equal to
  • 10
  • 11
  • 12
  • 14
If sinA,cosA and tanA are in G.P., then cot6Acot2A is equal to
  • 1
  • 0
  • 1
  • 12
The value of tan5tan10tan15tan85 is
  • 0
  • Not defined
  • 1
  • 1
The expression f(θ)=1tanθ+secθ+cotθ+cosecθ is equivalent to
  • cosecθ+secθ+cosecθsecθ2cosecθsecθ
  • cosecθsecθcosecθsecθ2cosecθsecθ
  • cosecθ+secθcosecθsecθ2cosecθsecθ
  • None of these
ABC is an isosceles right-angled triangle. Assuming AB=BC=x, find the value of each of the following trigonometric ratios:
sin450 is 1m, the value of m is 

184308.jpg
  • 1
  • 3
  • 2
  • 4
Choose the correct option for the following.
The value of cos3A2cos4Asin3A+2sin4A is 121+6, when A=150.
  • True
  • False
  • Ambiguous
  • Data insufficient
If tanADC=1 and sinABC=4:5, then measure of CD is: 

187003_c05f539d2d244f3c89e48a8d7c71aa9d.png
  • 10
  • 20
  • 30
  • 40
Find the length of AB in cm
187593_5777284f055742489e1e2697b2823e96.png
  • 39.25
  • 81.96
  • 46.32
  • 85.34
The length of AD (in cm.) is
187428.png
  • 10
  • 100
  • 75
  • 50
In the given figure; BC=15 cm  and sinB=45.
The measure of AC in cm is

186999_7bd76132660f466cb6fef0a54ce15e26.png
  • 10
  • 15
  • 20
  • 19
Find PQ, if AB=150 m,P=30 and Q=45
187681_4cbfe876b614462b89d6b7d01f3d0ce6.png
  • 978.8
  • 524.4
  • 279.9
  • 409.8
If in given figure AD=2 cm, then value of AB ( in cm )  is 
187601_352714e8102e4942922bc4252dd6c9f9.png
  • 2
  • 3
  • 7
  • 1
In the given figure, B=60,C=30,AB=8 cm and BC=25 cm
Calculate BE in cm.

187620_b16418eb3e3a40c4862d7d01397dbc82.png
  • 4
  • 2
  • 5
  • 7
Find :
AD

187639.bmp
  • 2
  • 6
  • 4
  • 1
If sinx+sin2x+sin3x=1, then cos6x4cos4x+8cos2x is equal to
  • 0
  • 2
  • 4
  • 8
If cos1ocos2ocos3o...cos179o=x+1, then x is equal to
  • 1
  • 0
  • 1
  • none of these
For all values of α the given expression is equal to:
 (sinα+cosecα)2+(cosα+secα)2(tan2α+cot2α) 
  • 0
  • 2
  • 4
  • 7
If 0<A<π/2 the value of the expression tanA1cotA+cotA1tanAsecAcosecA is equal to
  • -1
  • 0
  • 1
  • sin A + cos A
If tanA=1 and tanB=3 evaluate:cosAcosBsinAsinB
  • 2+64
  • 266
  • 1322
  • 2+66
If cosx+sinx=2cosx, then tan2x+2tanx is equal to
  • 0
  • 1
  • 2
  • 3
If secC is m22, then m is: 
196004.png
  • 1
  • 3
  • 7
  • 5
In the following figure, cosec A is 5m, m is 
196004.png
  • 1
  • 4
  • 3
  • 2
0:0:1


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