NCERT ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
- 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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- Prove that:cos^2 2x-cos^2 6x=sin4xsin8x
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- Prove that:sin2x+2sin4x+sin6x=4cos^2xsin4
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- Prove that:cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x)
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- Prove that:(cos9x-cos5x)/(sin17 x-sin3x)=-(sin2x)/(cos10 x)
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- Prove that:(sin5x+sin3x)/(cos5x+cos3x)=tan4x
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- Prove that:(sinx-siny)/(cosx+cosy)=tan(x-y)/2
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- Prove that:(sinx+sin3x)/(cosx+cos3x)=tan2x
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- Find the values of the trigonometric function tan (19pi)/3
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- Find the values of the trigonometric function sin (-(11pi)/3)
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- Find the value of other five trigonometric function cosx=-1/2, x lies...
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- Find the value of other five trigonometric function sinx=3/5, x lies ...
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- Find the value of other five trigonometric function cotx=3/4, x lies ...
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- Find the value of other five trigonometric function secx=(13)/5, x li...
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