sin(75) = sin(45 + 30) = sin(45)*cos(30) + cos(45)*sin(30)
= [1/sqrt(2)]*[sqrt(3)/2] + [1/sqrt(2)]*[1/2]
= 1/[2*sqrt(2)]*[sqrt(3) + 1]
that is [sqrt(3) + 1] / [2*sqrt(2)]
Chat with our AI personalities
sin75 = sin(45 + 30) = sin45cos30 + cos45sin30 = (1/root 2)((root 3)/2) + (1/root 2)(1/2)
Approximate value, is a value that is not necessarily the right answer but, it is the closest one to it.It means that it isn't exact - but close to the exact value.
Some value / exact value x 100 = percentage
trun it into sin( 45 + 30 ). sin ( 45 + 30 ) = sin30cos45 + cos30sin45 sin30cos45 + cos30sin45 = (1/2)((sqrroot2)/2) + ((sqrroot3)/2)((sqrroot2)/2) (1/2)((sqrroot2)/2) +((sqrroot3)/2)((sqrroot2)/2)=((sqrroot2)/4) + ((sqrroot6)/4) ((sqrroot2)/4) + ((sqrroot6)/4)= ((sqrroot2) + (sqrroot6)) /4
Approximate value, is a value that is not necessarily the right answer but, it is the closest one to it.It means that it isn't exact - but close to the exact value.