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What is cosine squared theta equal to'?

Updated: 4/28/2022
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Wiki User

13y ago

Best Answer

Cosine squared theta = 1 + Sine squared theta

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13y ago
This answer is:
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8y ago

NO!!

Cosine squared theta = 1 - Sine squared theta, not plus.

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Related questions

What is sine squared theta subtract six cosine squared theta divided by one minus seven cosine squared theta?

It is 1.


What does negative sine squared plus cosine squared equal?

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)


What does 1 minus cosine theta equal?

There is no easy simplification.


Do the equations sine plus cosine and sine squared plus cosine squared both equal 1?

No, they do not.


What does 2sin squared theta equal and why?

It is 2*sin(theta)*sin(theta) because that is how multiplication is defined!


What is cosine 2 theta when sine theta equals .28?

If sine theta is 0.28, then theta is 16.26 degrees. Cosine 2 theta, then, is 0.8432


Is cos theta is equal to 1?

No, not necessarily. Cosine theta is equal to 1 only when theta is equal to zero and multiples of 2 pi radians or multiples of 360 degrees. This is because cosine theta is hypotenuse over adjacent, and the ratio 1 only occurs at 0, 360, 720, etc. or 0, 2 pi, 4 pi, etc.


What are the values of theta of which secant theta is undefined?

Since secant theta is the same as 1 / cosine theta, the answer is any values for which cosine theta is zero, for example, pi/2.


What is Theta multiplied by cosine Theta?

It is a non-linear function of theta.


What is cos 90 minus theta?

cosine (90- theta) = sine (theta)


Can you make cosine squared X divided by2 equal to cosine squared x with some constant?

You could just pull out the half: it will be (1/2) cos squared x.


What is the equivalent of sine theta over secant theta?

For such simplifications, it is usually convenient to convert any trigonometric function that is not sine or cosine, into sine or cosine. In this case, you have: sin theta / sec theta = sin theta / (1/cos theta) = sin theta cos theta.