Sin^2 + ? = 1.

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Sin^2 + ? = 1.

?=________

Guest Dec 18, 2014

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Best Answer

There's a trigonometric identity that this resembles.

1 = sin^2+cos^2

Basically, ? = cos^2

Will85237 Dec 18, 2014

Will85237 · Answer 1 · 2014-12-18T01:57:59

There's a trigonometric identity that this resembles.

1 = sin^2+cos^2

Basically, ? = cos^2

Melody · Answer 2 · 2014-12-18T01:57:23

$$cos^2x$$

You need to memorize this it is a very important identity

$$sin^2x+cos^2x=1$$

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