Chat with our AI personalities
Cos(30) = sqrt(3)/2
cos(30) = sqrt(3)/2 so cosine squared is 3/4.
one over the square root of 2 or 0.850903525
cos 45o = 1/√2 = 1/2 x √2 ≈ 0.707
It is: cos^-1(12/13) = 22.61986495 degrees
cos(30 = 0.8660254038
cos(30)cos(55)+sin(30)sin(55)=cos(30-55) = cos(-25)=cos(25) Note: cos(a)=cos(-a) for any angle 'a'. cos(a)cos(b)+sin(a)sin(b)=cos(a-b) for any 'a' and 'b'.
Cos(30) = sqrt(3)/2
cos(30) is an irrational number and so cannot be expressed as a rational fraction. It is (√3)/2.
To simplify the expression sin(30°) cos(90°) sin(90°) cos(30°), we first evaluate the trigonometric functions at the given angles. sin(30°) = 1/2, cos(90°) = 0, sin(90°) = 1, and cos(30°) = √3/2. Substituting these values into the expression, we get (1/2) * 0 * 1 * (√3/2) = 0. Therefore, the final result of sin(30°) cos(90°) sin(90°) cos(30°) is 0.
sin(30) = sin(90 - 60) = sin(90)*cos(60) - cos(90)*sin(60) = 1*cos(60) - 0*sin(60) = cos(60).
cos 60
Root 3 over 2.
cos(60) = 0.57 x 60 x cos(60) = 7 x 30 = 210
510 ~ (510-360) ~ 150 Cos 510 = Cos 150 = - Cos 30 = - ( radical 3 ) / 2
cos(30 deg) = sqrt(3)/2 = 0.8660 approx.
If tan 3a is equal to sin cos 45 plus sin 30, then the value of a = 0.4.