Determine cos 315degrees

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asked Sep 9, 2022 152k views

18 votes

Determine cos 315degrees

Mathematics
college

Sundar R asked

by Sundar R

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2 Answers

13 votes

It’s same as: cos45

You can always subtract or subtract FROM 360.

360-315=45

Exact value of cos45 is √2/2

LDomagala answered Sep 11, 2022

by LDomagala

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7 votes

Answer:

Exact Form:

√ 2/ 2

Decimal Form:

0.70710678 …

Explanation:

Find the exact value using trigonometric identities.

Fender answered Sep 14, 2022

by Fender

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Convert the complex number 3 - 3i into its polar representation. a. 3(cos(60degrees) + isin(60degrees)) b. 3√2(cos(135degrees) + isin(135degrees)) c. √3(cos(225degrees) + isin(225degrees)) d. 3√(cos(315degrees)

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