Question

Value of sin if csc=13/9 and 0° < theta < 90°

Answer 1

Yep their right The answer is A :)

Answer 2

Answer: 9/13 ==> A

Explanation:

sin is between 0 and 1 if 0° < theta < 180° ==> sin is positive when y is positive

sin is between -1 and 0 is 180° < theta < 360° ==> sin is negative when y is negative

sin theta * csc theta = 1

sin theta * 13/9=1

sin theta * 13/9 * 9/13 = 1 * 9/13

sin theta = 9/13 ==> A