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I need some help on this

I need some help on this
asked 177k views
1 vote
I need some help on this

I need some help on this-example-1
asked
User NavidM
by
7.9k points

2 Answers

6 votes

Answer:

Option B is correct

Explanation:

cos (3pi/4) = -cos(pi - 3pi/4) = -cos(pi/4) = -sqrt(2)/2

=> Option B is correct

answered
User David Specht
by
8.8k points
4 votes

Answer: The answer is B

Explanation:

answered
User John Starr Dewar
by
7.9k points
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