सिद्ध कीजिए कि - cos^(-1).(3)/(5)+cos^...

सिद्ध कीजिए कि -
`cos^(-1).(3)/(5)+cos^(-1).(4)/(5)=(pi)/(2).`

सिद्ध कीजिए कि - cos^(-1).(3)/(5)+cos^(-1).(4)/(5)=(pi)/(2).
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cos ^ (2) (3 (pi) / (5)) * cos ^ (2) (4 (pi) / (5))
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2tan^(-1)(-2) is equal to (a)-cos t^(-1)((-3)/5) (b) -pi+cos^(-1)3...
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The value of cos[1/2cos^(-1)cos((14pi)/5)]i s (a)cos((2pi)/5) ...
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Prove that: cos(pi/5)cos((2pi)/5)cos((4pi)/5)cos((8pi)/5)=(-1)/16
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The value of cos[1/2cos^(-1)(cos(-(14pi)/5))]\ is/are a.cos(-(7pi)/...
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Show that 1/2 cos^-1 (3/5) = tan^-1 (1/2) =pi/4 - 1/2 cos^-1( 4/5)
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cos^(-1)(cos(5 pi/(3))+sin^(-1)(cos(5 pi/(3))=
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यदि sin B = 1/2,"तो सिद्ध करें कि " 3 cos B - 4 cos^(3) B = 0
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