What is cos theta when sin theta = sqrt 2/3

Value of cosθ is ±√7/3 .

Step-by-step explanation:

According to the Question , value of :

And , we know the identity of sine and cosine as ,

Using , this identity we have ;

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be :

you have 6 cupcakes

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls