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Yes. 'sin2x + cos2x = 1' is one of the most basic identities in trigonometry.

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โˆ™ 2009-10-26 03:08:25
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Q: Does sin squared x plus cos squared x equal 1?
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Related questions

What is sin squared equal to?

Sin squared is equal to 1 - cos squared.

Factor sin cubed plus cos cubed?

sin cubed + cos cubed (sin + cos)( sin squared - sin.cos + cos squared) (sin + cos)(1 + sin.cos)

Why does sin plus cos equal one?

There is no reason at all. For most angles sin plus cos do not equal one.

What does 1 - cos squared equal?

Note that an angle should always be specified - for example, 1 - cos square x. Due to the Pythagorean formula, this can be simplified as sin square x. Note that sin square x is a shortcut of (sin x) squared.

What is Cos squared x equal to?

Cos^2 x = 1 - sin^2 x

What does cos squared x - Sin squared x equal?

2 x cosine squared x -1 which also equals cos (2x)

What is sin squared x minus cos squared x?

Sin squared, cos removed the x in the equation.

How do you differentiate sin squared x plus cos squared x?

The deriviative of sin2 x + cos2 x is 2 cos x - 2 sin x

Find the value of a if tan 3a is equal to sin cos 45 plus sin 30?

If tan 3a is equal to sin cos 45 plus sin 30, then the value of a = 0.4.

Sin squared theta plus cos squared theta barabar Kya Hota Hai?


How do you prove that the sin over one minus the cosine minus one plus the cosine over the sine equals zero?

Multiply both sides by sin(1-cos) and you lose the denominators and get (sin squared) minus 1+cos times 1-cos. Then multiply out (i.e. expand) 1+cos times 1-cos, which will of course give the difference of two squares: 1 - (cos squared). (because the cross terms cancel out.) (This is diff of 2 squares because 1 is the square of 1.) And so you get (sin squared) - (1 - (cos squared)) = (sin squared) + (cos squared) - 1. Then from basic trig we know that (sin squared) + (cos squared) = 1, so this is 0.

What is 1 minus cos squared?

sin squared

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