Question

What is the value of 2cosec^2 teta+3 sec^2teta- 10.
if teta = 45°​

Answer 1

Step-by-step explanation:

2Cosec²45° + 3Sec²45° - 10

2(√2)² + 3(√2)² - 10

2(2) + 3(2) - 10

4 + 6 - 10

10 - 10

= 0