What is the cosine if the sine=√5:6

cosine = √31/6

Step-by-step explanation:

It is given that,

sine=√5/6

we know that, sine = opposite side/Hypotenuse

To find Adjacent side

Adjacent side = √ (Hypotenuse² - opposite side²)

Adjacent side = √ (6² - √5²) = √ (36 - 5) = √31

To find cosine

cosine = Adjacent side/Hypotenuse

cosine = √31/6