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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
- If cosx=tany,cos y=tanz cosz=tanx, then the value of sin x, is
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- If k=sin^(6)c+cos^(6)x, then k belongs to the interval
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- The value of tan9^@-tan2 7^@-tan6 3^@+tan8 1^@ is equal to
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- 2tan^2 alpha tan^2 betatan^2gamma+tan^2 alpha tan^2beta+tan^2 betatan^...
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- the value of e^(log(10)tan1^@+log(10)tan2^@+log(10)tan3^@....+log(10)t...
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- For what and only what values of alpha lying between 0 and pi/2 is the...
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- If (secA-tanA)(secB-tanB)(secC+tanC)=(secA+tanA)(secB+tanB)(secC-tanC)...
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- If pi lt alpha lt (3pi)/2then the expression sqrt(4 sin^4alpha +sin^2 ...
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- If alpha is an acute angle and sin(alpha/2)=sqrt((x-1)/(2x)) then tan ...
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- Find the Value of tan 82 1/2^@
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- The value of tan6^0tan42^0tan66^0tan78^0 is 1 (b) 1/2 (c) 1/4 (d)...
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- The value of cot36^(@)cot72^(@), is
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- The value of cospi/7+cos(2pi)/7+cos(3pi)/7+cos(4pi)/7+cos(5pi)/7+cos(6...
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- cos(2pi/7)+cos(4pi/7)+cos(6pi/7)
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- The value of cos""(pi)/(9)cos""(2pi)/(9)cos""(3pi)/(9), is
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- The value of cos""(pi)/(9)cos""(2pi)/(9)cos""(3pi)/(9)cos""(4pi)/(9), ...
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- The vlaue of cosec^(2)""(pi)/(7)+cosec^(2)""(2pi)/(7)+cosec^(2)""(3pi)...
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- sin1 2^(@)sin4 8^(@)sin5 4^(@)=
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- the value of sin(pi/7)+sin((2pi)/7)+sin((3pi)/7) is
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- cos^6pi/9-33tan^4pi/9+27tan^2pi/9 is equal to 0 (b) sqrt(3) (c) 3 ...
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