सिद्ध करे : cos^2 (pi/8) + cos^2 ((3pi)...

सिद्ध करे : `cos^2 (pi/8) + cos^2 ((3pi)/8) + cos^2 ((5pi)/8) + cos^2( (7pi)/8) = 2`

सिद्ध करे : cos^2 (pi/8) + cos^2 ((3pi)/8) + cos^2 ((5pi)/8) + cos^2(...
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Prove that cos^(4)pi/8+cos^(4)(3pi)/(8)+cos^(4)(5pi)/8+cos^(4)(7pi)/...
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Prove that: cos^(2)pi/8 + cos^(2)(3pi)/(8) + cos^(2)(5pi)/(8)+ cos^(...
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cos^(2) .(pi)/(8) + cos^(2).(3pi)/(8) + cos^(2)(5pi)/(8) + cos^(2) (7...
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सिद्ध कीजिए कि cos^(2) . pi/8 +cos^(2). (3pi)/8 +cos^(2).(5pi)/8 + ...
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सिद्ध कीजिए कि - (i) cos ^(2). pi/8 + cos6^(2). (3pi)/8 + cos^(2). (...
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Show that cos^4""pi/8+cos^4""(3pi)/8+cos^4""(5pi)/8+cos^4""(7pi)/8=3/2
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Find the values: (iv) cos^(2) ((pi)/8) + cos^(2) ((3pi)/8) + cos^(2)...
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cos^(2) (pi/8) + cos^(2) ((3pi)/8) + cos^(2) ((5pi)/8) + cos^(2) ((7pi...
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