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Mathematics

Answered

if sin of beta = 4/7, what is cos of beta?

Answer :

mkryukova19 mkryukova19

Today at 3:23 PM

sin²β +cos²β=1
cos²β=1-sin²β
cos²β=1-(4/7)²
cos²β=1-16/49=49/49-16/49=33/49
cosβ=√33/√49=√33/7

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