sin(62 deg) = 0.8829
You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.
Sine 3.3 degrees is about 0.057564. Sine 3.3 radians is about -0.157746. Sine 3.3 grads is about 0.051813.
sine(15 degrees) = 0.25882 (rounded)
One. Exactly one.
The sine of an angle can never equal 2 because the sine function, defined as the ratio of the length of the opposite side to the hypotenuse in a right triangle, has a range of values between -1 and 1. This means that for any angle, the sine value will always fall within this interval, making it impossible for sine to equal 2. Therefore, there are no angles for which the sine function outputs a value of 2.
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Sine 3.3 degrees is about 0.057564. Sine 3.3 radians is about -0.157746. Sine 3.3 grads is about 0.051813.
The sine of 180 degrees is 0. Remember, the sine value on a unit circle is the y-value. If you find f(pi) in the function f(x)=sin(x), you will get zero as an answer.
If you look at the definition of the sine function in a triangle, you'll discover that the maximum possible value of the sine function is ' 1 ' and the minimum possible value is ' -1 '. There's no angle that can have a sine greater than ' 1 ' or less than ' -1 '. So the absolute value of the sine of anything is always ' 1 ' or less.
sine(15 degrees) = 0.25882 (rounded)
One. Exactly one.
sine of 30 degrees
The sine of an angle can never equal 2 because the sine function, defined as the ratio of the length of the opposite side to the hypotenuse in a right triangle, has a range of values between -1 and 1. This means that for any angle, the sine value will always fall within this interval, making it impossible for sine to equal 2. Therefore, there are no angles for which the sine function outputs a value of 2.
The exact value is 0.5*sqrt(3)
Your question is insufficiently precise, but I'll try to answer anyway. "Sine squared theta" usually means "the value of the sine of theta, quantity squared". "Sine theta squared" usually means "the value of the sine of the quantity theta*theta". The two are not at all the same.
The rms value of a sine wave current is 0.707 Imax. So the answer to your quesion is 0.707 x 4 = 2.83 A.
Effective = RMS= average Not for a sine wave it isn't. The r.m.s. value of a sine wave is 1.11 x the average, or mean, value. The "effective" value is not a term which I've seen in any of my reference books.
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