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NCERT ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
- The minute hand of a watch is 1.5 cm long. How far does its tip move ...
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- If the arcs of the same lengths m two circles subtend angles 65oand 1...
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- Convert 6 radians into degree measure.
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- Find the radius of the circle in which a central angle of 60^@interce...
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- Convert 40^o2 0^(prime)into radian measure.
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- Find the general solution : cos 3x + cos x cos 2x = 0
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- Find the general solution : sin 2x + cos x = 0
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- Find the principal solution of the equation tanx=-1/(sqrt(3)).
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- Find the principal solution of the equation sinx=(sqrt(3))/2.
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- Find the value of sin15o.
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- Prove that: 2sinpi/6s e cpi/3-4sin(5pi)/6cospi/4=1
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- Prove that (sin(x+y))/(sin(x-y))=(tanx+tany)/(tanx-tany)
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- Find the value of tan (13pi)/(12).
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- Prove that cos(pi/4+x)+cos(pi/4-x)=sqrt(2)cosx.
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- Show that tan 3x tan 2x tan x = tan 3x - tan 2x - tan x.
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- Prove that (sin5x-2sin3x+sinx)/(cos5x-cosx)=tanx
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- Prove that (cos7x+cos5x)/(sin7x-sin5x)=cotx.
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- Prove that: sin (n + 1) x sin (n + 2)x + cos (n + 1) x cos (n + 2) x =...
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- Prove that: cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt(2)sinx
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- Prove that: sin^2 6x-sin^2 4x=sin2xsin10 x
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