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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
- 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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- (sin^2 3A)/(sin^2A)-(cos^2 3A)/(cos^2A)=
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- If sinA=(336)/(625)where450^(@)ltAlt540^(@), then sin""(A)/(4)=
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- If y=(tanx)/(tan3x), then
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- The value of cot^(2)""(pi)/(7)+cot^(2)""(2pi)/(7)+cot^(2)""(3pi)/(7), ...
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- The value of sin""(pi)/(7)sin""(2pi)/(7)sin""(3pi)/(7), is
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- The value of sin""(2pi)/(7)+sin""(4pi)/(7)+sin""(8pi)/(7), is
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- cos""(2pi)/(15)cos""(4pi)/(15)cos""(8pi)/(15)cos""(16pi)/(15)=(1)/(16)
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- If sinA+cosA=m an sin^(3)A+cos^(3)A=n, then
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- If cosA+cosB=m and sinA+sinB=n then sin(A+B)=
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- If ltA lt(pi)/(6) and sinA+cosA=(sqrt7)/(2),"then" tan""(A)/(2)=
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