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a = 0, b = 0.

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โˆ™ 2014-01-29 14:55:11
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Math and Arithmetic

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What is the area of a cirle with a radius of 5 in

A yard is equal in length to three feet The function Fy takes a measurement in yards as input and returns a measurement in feet as output What input will return a value of 27

What is the height of a cone

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Q: What will be the X in terms of a and b if Cos aX equals 1 plus bX and a and b are constants?
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Sin 15 plus cos 105 equals?

Sin 15 + cos 105 = -1.9045


Cos x equals -cos x plus 1?

No, but cos(-x) = cos(x), because the cosine function is an even function.


What is the solution to cos x equals 3 cos x - 2?

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Cos plus cos plus cos?

3cos


2 cos x plus 1 cos x plus -1 equals 0?

2 cos * cos * -1 = 2cos(square) * -1 =cos(square) + cos(square) *-1 =1- sin(square) +cos(square) * -1 1 - 1 * -1 =0


Who formulated eix equals cos x plus you sin x?

leonhard euler


Verify that sin minus cos plus 1 divided by sin plus cos subtract 1 equals sin plus 1 divided by cos?

[sin - cos + 1]/[sin + cos - 1] = [sin + 1]/cosiff [sin - cos + 1]*cos = [sin + 1]*[sin + cos - 1]iff sin*cos - cos^2 + cos = sin^2 + sin*cos - sin + sin + cos - 1iff -cos^2 = sin^2 - 11 = sin^2 + cos^2, which is true,


How do you express sin x plus cos x divided by cos x in terms of tan x?

(sin x + cos x) / cosx = sin x / cos x + cosx / cos x = tan x + 1


Is 1- cos 2 x 1 plus cos 2 x equals sin squared x cos squared x an identity?

No, (sinx)^2 + (cosx)^2=1 is though


How would you prove left cosA plus sinA right times left cos2A plus sin2A right equals cosA plus sin3A?

You need to make use of the formulae for sin(A+B) and cos(A+B), and that cos is an even function: sin(A+B) = cos A sin B + sin A cos B cos(A+B) = cos A cos B - sin A sin B cos even fn → cos(-x) = cos(x) To prove: (cos A + sin A)(cos 2A + sin 2A) = cos A + sin 3A The steps are to work with the left hand side, expand the brackets, collect [useful] terms together, apply A+B formula above (backwards) and apply even nature of cos function: (cos A + sin A)(cos 2A + sin 2A) = cos A cos 2A + cos A sin 2A + sin A cos 2A + sin A sin 2A = (cos A cos 2A + sin A sin 2A) + (cos A sin 2A + sin A cos 2A) = cos(A - 2A) + sin(A + 2A) = cos(-A) + sin 3A = cos A + sin 3A which is the right hand side as required.


Sin x plus cos x equals?

The result is variant, therefore uncertain. The only sure thing is that sin(x)2 + cos(x)2 = 1.


Why wev use of stdioh in c?

Cos it contains useful function-declarations, constants, types.


What is the angle for cos equals 0.2874?

cos-1(0.2874) = 73.29763833


Cos plus tansin equals sec?

Start on the left-hand side. cos(x) + tan(x)sin(x) Put tan(x) in terms of sin(x) and cos(x). cos(x) + [sin(x)/cos(x)]sin(x) Multiply. cos(x) + sin2(x)/cos(x) Make the denominators equal. cos2(x)/cos(x) + sin2(x)/cos(x) Add. [cos2(x) + sin2(x)]/cos(x) Use the Pythagorean Theorem to simplify. 1/cos(x) Since 1/cos(x) is the same as sec(x)- the right-hand side- the proof is complete.


How do you solve the equation cos2x plus 20 equals negative half?

Better formatting is cos(2x+20)=-0.5


When does cos x equal -sin x?

The derivative of cos(x) equals -sin(x); therefore, the anti-derivative of -sin(x) equals cos(x).


If a cos theta plus b sin theta equals 8 and a sin theta - b cos theta equals 5 show that a squared plus b squared equals 89?

There is a hint to how to solve this in what is required to be shown: a and b are both squared.Ifa cos θ + b sin θ = 8a sin θ - b cos θ = 5then square both sides of each to get:a² cos² θ + 2ab cos θ sin θ + b² sin² θ = 64a² sin² θ - 2ab sin θ cos θ + b² cos² θ = 25Now add the two together:a² cos² θ + a² sin² θ + b² sin² θ + b² cos² θ = 89→ a²(cos² θ + sin² θ) + b² (sin² θ + cos² θ) = 89using cos² θ + sin² θ = 1→ a² + b² = 89


Write COS in terms of SIN?

cos = sqrt(1 - sin^2)


Prove that secB - cosB equals tanBsinB?

Try to write everything in terms of sines and cosines:1 / cos B - cos B = (sin B / cos B) sin B1 / cos B - cos B = sin2B / cos BMultiply by the common denominator, cos B:1 - cos2B = sin2BUse the pithagorean identity on the left side:sin2B + cos2B - cos2B = sin2Bsin2B = sin2B


Cos 0 sin 0 plus 1 equals 0?

No. sin(0) = 0 So cos(0)*sin(0) = 0 so the left hand side = 1


Cot 70 plus 4cos70 equals?

cot 70 + 4 cos 70 = cos 70 / sin 70 + 4 cos 70 = cos 70 (1/sin 70 + 4) = cos 70 (csc 70 + 4) Numerical answer varies, depending on whether 70 is in degrees, radians, or grads.


Find the values of ฮธ in the range 0 to 2ฯ€ for cos ฮธ plus cos 3ฮธ equals sin ฮธ plus sin 3ฮธ?

The angle can be 0, pi/2, pi, 3*pi/2 or 2*pi radians.


The cos of a 40รด angle equals?

7.66


The cos of a 40 angle equals?

0.766


What equals 1 cos squared x divided by cos squared x?

1. Anything divided by itself always equals 1.