0
0.1333
Sonny Kuphal
Wiki User
∙ 11y agoExpressed as a surd, 6/cos(45) = 6 sqrt(2). Expressed as a decimal, 6/cos(45) = 8.49.
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If sin y and deg a divided by 6 and tan y and deg a divided by b what is the value of cos y and deg (6 points)?
1
Find out value of sin 45 cos 45 - sin 230?
Assuming that the angles are all stated in degrees: sin(45) = cos(45) = 1/2 sqrt(2) sin(45) cos(45) = (1/2)2 x (2) = 1/2 sin(230) = - 0.7660444 sin(45) cos(45) - sin(230) = 0.5 + 0.7660444 = 1.2660444 (rounded)
Why does cos negative theta equals positive theta?
You must think of the unit circle. negative theta is in either radians or degrees and represents a specific area on the unit circle. Remember the unit circle is also like a coordinate plane and cos is the x while sin is the y coordinate. Here is an example: cos(-45): The cos of negative 45 degrees is pi/4 and cos(45) is also pi/4
Sin x plus cos x?
sin(x) + cos(x) = sqrt(2) · sin(45°+x)
How do you prove that 2 sin 3x divided by sin x plus 2 cos 3x divided by cos x equals 8 cos 2x?
You need to know the trigonometric formulae for sin and cos of compound angles. sin(x+y) = sin(x)*cos(y)+cos(x)*sin(y) and cos(x+y) = cos(x)*cos(y) - sin(x)*sin(y) Using these, y = x implies that sin(2x) = sin(x+x) = 2*sin(x)cos(x) and cos(2x) = cos(x+x) = cos^2(x) - sin^2(x) Next, the triple angle formulae are: sin(3x) = sin(2x + x) = 3*sin(x) - 4*sin^3(x) and cos(3x) = 4*cos^3(x) - 3*cos(x) Then the left hand side = 2*[3*sin(x) - 4*sin^3(x)]/sin(x) + 2*[4*cos^3(x) - 3*cos(x)]/cos(x) = 6 - 8*sin^2(x) + 8cos^2(x) - 6 = 8*[cos^2(x) - sin^2(x)] = 8*cos(2x) = right hand side.
What is 270 divided by 45?
6
What is 270 divided by 6?
45
What is 48 divided by 6 plus 45 divided by 9?
48 divided by 6 plus 45 divided by 9 = 8 + 5 = 13
What is the exact value of cos 7.5 pie divided by 6?
1.25
What is 45 divided by 7 with a remainder?
6.4286
If sin y and deg a divided by 6 and tan y and deg a divided by b what is the value of cos y and deg (6 points)?
1
83076 divided by 45?
1846.1333
What is cos 45?
square root 2 divided by 2 You can see this as follows: imagine a circle with radius 1. The point on the circle with angle 45 degrees, lies on the line y=x, equally far from the x-axis (cos) as the y-axis (sin), because the angle is 45 for both (because x and y are orthogonal: 90 deg). We have cos^2 + sin^2 = 1 . But from the above we know that cos(45) must be equal to sin(45), because they represent the distances to x and y axis respectively, and the point is exactly inbetween, so the distances are equal. We get cos^2 + sin^2 = cos^2 + cos^2 = 2cos^2 = 1 cos = 1/sqrt(2) = sqrt(2) / 2
Cos 195 degree use the trigonometry functions of quadrantal angles and special to find the exact value?
cos(195) = cos(180 + 15) = cos(180)*cos(15) - sin(180)*sin(15) = -1*cos(15) - 0*sim(15) = -cos(15) = -cos(60 - 45) = -[cos(60)*cos(45) + sin(60)*sin(45)] = -(1/2)*sqrt(2)/2 - sqrt(3)/2*sqrt(2)/2 = - 1/4*sqrt(2)*(1 + sqrt3) or -1/4*[sqrt(2) + sqrt(6)]
What is 56 divid by 6?
56 divided by 6 is 9.33
What number when divided by 6 equals 45?
270
Find out value of sin 45 cos 45 - sin 230?
Assuming that the angles are all stated in degrees: sin(45) = cos(45) = 1/2 sqrt(2) sin(45) cos(45) = (1/2)2 x (2) = 1/2 sin(230) = - 0.7660444 sin(45) cos(45) - sin(230) = 0.5 + 0.7660444 = 1.2660444 (rounded)
