Cos square 30 degree minus sin square 30 degree is equals to 1 minus 2 sin square 30 degree

Mathematics

1 answer:

babunello [35]3 years ago

4 0

Answer:

see explanation

Step-by-step explanation:

Not sure quite what you are asking, but

Using the trigonometric identity

cos² x = 1 - sin²x, then

cos²x - sin²x

= 1 - sin²x - sin²x

= 1 - 2sin²x

Thus

cos²30° - sin²30° = 1 - 2sin²30°

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Answer:

Solution given:

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