ENE plus 90 degrees (clockwise) is SSE.
An angle of 366 degrees is a full turn plus 6 degrees
1) x=21 2) x=14.45
The inside angles of a triangle always add up to 180 degrees.If you mean angle a plus angle b equal 85 degrees, then angle c must be 95 degrees.If you mean angle a is 85 degrees and angle b is also 85 degrees, then angle c must be 10 degrees50 degrees :)
The direction NNW plus 90 degrees is ENE. ---------------------- NW is a bearing of 315 and NNW is a bearing of 337.5. Add 90 to this, and subtract 360 because we have "gone round": 337.5 + 90 = 427.5; 427.5 - 360 = 67.5. This is past NE, so the answer is ENE.
No, they do not.
Cosine squared theta = 1 + Sine squared theta
There is no real significance to sine plus cosine, now sin2(x) + cos2(x) = 1 for any x, where sin2(x) means to take the sign of the number, then square that value.
This is known as the Cosine Rule.
No, but cos(-x) = cos(x), because the cosine function is an even function.
One definition of sine and cosine is with a unitary circle. In this case, the sine is simply equal to the y-coordinate, and the cosine, the x-coordinate. Since the hypothenuse is 1, the equation in the question follows directly from Pythagoras' Law: x2 + y2 = r2, x2 + y2 = 1, cos2A + sin2A = 1. You can also derive it from the alternative definition of sine and cosine (ratios in a right triangle).
cosine plus use an "oh" ending word followed by the word "sign" e.g. go/no/slow/ sign Trust Me it is real
There isn't a sec key on the TI-83 Plus. Secant is 1/cosine, which is what is used to find secant on a TI-83 Plus. For example, to find the secant of 4, enter 1/sec(4).
To determine what negative sine squared plus cosine squared is equal to, start with the primary trigonometric identity, which is based on the pythagorean theorem...sin2(theta) + cos2(theta) = 1... and then solve for the question...cos2(theta) = 1 - sin2(theta)2 cos2(theta) = 1 - sin2(theta) + cos2(theta)2 cos2(theta) - 1 = - sin2(theta) + cos2(theta)
A "zero of a function" is a point where the dependent value (usually, Y) is zero. In the function f(x) = x2 - 2, for example, there are zeroes at -1.414 and +1.414.The zeroes of the sine function are at all integer multiples of pi, i.e. 0, pi, 2pi, 3pi, etc. The zeroes of the cosine function are at the same points plus pi/2, i.e. pi/2, 3pi/2, 5pi/2, etc.Another way to look at this is that the zeroes of sine are the even multiples of pi/2, and the zeros of cosine are the odd multiples of pi/2.
There is not cos2 button on a TI-83 plus. You will need to enter the cosine function and then square it. (Press the x2 button to get the squared function.) To type cos2(90) on a TI-83 plus, for example, type: cos(90)2