Question

cos75/sin15+sin12/cos78-cos18•cosec72

Answer 1

◀ HERE'S ⏬ YOUR ANSWER▶

$\frac{cos75}{sin15} + \frac{sin12}{cos78} - cos18.cosec72 \\ = \frac{cos(90 - 15)}{sin15} + \frac{sin(90 - 78)}{cos78} - cos(90 - 72).cosec72 \\ = \frac{sin15}{sin15} + \frac{cos78}{cos78} - sin72.cosec72 \\ = 1 + 1 - 1 \\ = 1$

⏏HOPE THIS ⬆ HELPS YOU⏏

Answer 2

hope this helps you mark as brainlist