Math, asked by mrina123, 1 year ago

prove that
plzz ans fast

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Answered by abtin4564
1
4[(1/2)^4 + (1/2)^4 ] - 3[ (√2/2)^2 - 1^2 ]

= 4[1/8] -3[-1/2]

= 1/2 + 3/2 = 2∴

mrina123: the value of cos 45 is 1/√2
abtin4564: no difrent ):
mrina123: but how
abtin4564: i write rational form
mrina123: okk
mrina123: thaxx
abtin4564: (1/√2)*(√2/√2) = √2/2
mrina123: okk
mrina123: thaxx
abtin4564: welcome ):
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