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Determine cos 315degrees
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18 votes
Determine cos 315degrees

User Sundar R
by
7.1k points

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
User LDomagala
by
7.9k points
7 votes

Answer:

Exact Form:

√ 2/ 2

Decimal Form:

0.70710678 …

Explanation:

Find the exact value using trigonometric identities.

User Fender
by
7.6k points
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