Question

sin theta =5 /3, 1-cos^theta =?​

Answer 1

Answer:

$given \: sina = \frac{5}{3} \\ we \: know \: that \: {sin}^{2}a + {cos}^{2} a = 1 \\ \\ 1 - {cos}^{2} a = {sin}^{2} a = \frac{5}{3} \times \frac{5}{3} = \frac{25}{9}$