cos(495) = cos(495-360) = cos(135) = -cos(180-135) = -cos(45) = -sqrt(1/2) or -1/sqrt(2)
Cos 43
cos 315 degrees is 4th quadrant same as cos (-45) degrees which is +0.7071
cos 34o ≈ 0.829 cos 34 = 0.86074
cos(25o) = 0.906307787 ==========
The cosine of 70 degrees is 0.34202014332567.
The value of cos 40 degrees is approximately 0.766.
The cosine of 450 degrees can be found by first reducing it to an equivalent angle within the standard range of 0 to 360 degrees. Since 450 degrees is equal to 450 - 360 = 90 degrees, we find that cos(450 degrees) = cos(90 degrees). Therefore, cos(450 degrees) is equal to 0.
Cos 43
It is: cos(0) = 1
cos(125) = cos(180 - 55) = cos(180)*cos(55) + sin(180)*sin(55) = -cos(55) since cos(180) = -1, and sin(180) = 0 So A = 55 degrees.
cos 315 degrees is 4th quadrant same as cos (-45) degrees which is +0.7071
cos 34o ≈ 0.829 cos 34 = 0.86074
Cos(22.5)=0.9238795325
I can answer if you tell me what cos means.
cos(25o) = 0.906307787 ==========
cos(22) is a trigonometric ratio and, if the angle is measured in degrees, its value is 0.9272
The cos of 2pi is 360 degrees which is 1.