What is the exact value of sin when cos x =1/√10?

[ohhnana]

Homework Statement

cos x is a first quadrant angle in standard position and cos x =1/√10 . Find the exact value of sin .

Homework Equations

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The Attempt at a Solution

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[SteamKing]

Hint: Remember the definition of sine and cosine.

 

[mege]

I would suggest drawing a triangle with the fraction result of cos x distributed on the appropriate edges. You should be able to 'fill in the blanks'

 

[Mark44]

Homework Statement

cos x is a first quadrant angle in standard position and cos x =1/√10 . Find the exact value of sin .

Homework Equations

?

The Attempt at a Solution

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