Find sinФ if cosФ = √17/9

8/9.

Step-by-step explanation:

We can use the following trig identity to do this:

cos^2 Ф + sin^2 Ф = 1

sin^2 Ф = 1 - cos^2 Ф

= 1 - (√17/9) ^2

= 1 - 17/81

= 81/81 / 17/81

= 64/81

So sin Ф = √ (64/81)

= 8/9 (answer).