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RD SHARMA-TRIGONOMETRIC RATIOS OF MULTIPLE AND SUBMULTIPLE ANGLES-Solved Examples And Exercises
- Prove that cos6^@ . cos42^@. cos66^@ cos78^@= 1/16
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- Prove that: sin6^0sin42^0sin 66^0sin 78^0=1/(16)
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- Prove that: sin36^0s in 72^0s in 108^0s in 144^0=5/(16)dot
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- If cos4x=1+ksin^2x cos^2x , then write the value of kdot
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- If tanx/2=m/n ,\ then writhe the value f msinx+n\ cos xdot
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- If pi/2<theta<(3pi)/2\ then write the value of sqrt((1+cos2theta)/2)
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- If pi/2<theta<pi, then write the value of sqrt(2+sqrt(2+2cos2theta)) i...
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- If pi/2<theta<pi , then write the value of sqrt((1-cos2theta)/(1+cos2t...
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- If pi<theta<(3pi)/2 , then write the value of sqrt((1-cos2theta)/(1+co...
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- Write the value of cos^2 76^@+cos^2 16^@- cos76^@ cos16^@
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- If pi/4<theta<pi/2, then write the value of sqrt(1-s in2theta)
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- Prove that: cospi/7cos(2pi)/7cos(4pi)/7=-1/8,
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- If sin x+cos x=a , find the value of sin^6x+cos^6xdot
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- If s in x+cos x=a , find the value of |s in x-cos x|dot
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- 8.sin(x/8).cos(x/2).cos(x/4).cos(x/8)=
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- cos(pi/65)cos((2pi)/65)cos((4pi)/65)cos((8pi)/65)cos((16pi)/65)cos((32...
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- For all real values of x ,cotx-2cot2x is equal to a.tan2x b. t a n x ...
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- The value of 2tanpi/(10)+3secpi/(10)-\ 4cospi/(10) is 0 b. 1 c. sqrt(5...
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- If in a Delta ABC, tanA+tanB+tanC=0 then cotA cotB cot C= a.6, b. 1, c...
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- If s inalpha+s inbeta=a\ a n d\ cosalpha-cosbeta=b , then tan(alpha-be...
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