Question

If sin theta is equal to 1 upon 3 then the value of 9 cot square theta + 9 is

Answer 1

ans is 81

solve using identities

Answer 2

Answer:

sinθ = 1/3 then  cosθ = 3/1

∴ cotθ = cosθ/sinθ

           =  3/1/3

           =  3×3

           =   9

to find the value of 9(cot^2θ)+9

                              = 9×9×9+9

                              = 81×9+9

                              = 729+9

                              = 738

∴ the value of  9(cot^2θ)+9 is 738