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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
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- Find the value of log tan1^0logtan2^0logtan89^0
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- If If x cosalpha+y sinalpha=2a, x cos beta+y sinbeta=2aand 2sin""(alph...
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- If tan x =(2b)/ (a- c), y = acos^2 x + 2bsin x cos x + csin^2 x, z=as...
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- If alpha+beta+gamma=2pi then
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- If sintheta-costhetalt0, then theta lies between
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- If 2 sin""A/2=sqrt(1+sinA)+sqrt(1-sinA,)then A/2 lies between,
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- If 2cos""(A)/(2)=sqrt(1+sinA)+sqrt(1-sinA), thenA/2 iles between,
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- Find the angle theta whose cosine is equal to its tangent.
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- The value of cos((2pi)/(15))cos((4pi)/(15))cos((8pi)/(15))cos((14pi)/(...
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- Find the value of : cos(pi/15)cos((2pi)/15)cos((3pi)/15)cos((4pi)/15)c...
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- The value of tan 5 theta is
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- If costheta=cos alphacosbeta, then tan((theta+alpha)/(2))tan((theta-al...
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- If abs(cos theta{sin theta+sqrt(sin^2theta+sin^2alpha)})lek, then the ...
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- The value of sin10^@+sin20^@+sin30^@...+sin360^@ is equal to -
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- The expression 3{sin^(4)((3pi)/(2)-alpha)+sin^(4)(3pi-alpha)} -2{s...
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- If sinA+sinB=(pi)/(4),then (tanA+1)(tanB+1) is equal to
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- If sinA+sinB=a and cosA+cosB=b,then cos(A+B)
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- If an angle theta is divided into two parts A and B such that A-B=x an...
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