Question

cosec² 45° + tan² 45° - 3sin²90°​

Answer 1

Answer:

0

Step-by-step explanation:

cosec² 45° + tan² 45° - 3sin²90°

(√2)²+1²-3(1)²

2+1-3

3-3

0

.....666.......

Answer 2

Answer:

cosec 45°=√2;

tan 45°=1;

sin 90°=1;

substitute values

we get,

=(√2)^2+(1)^2-3(1)^2

=2+1-3

=0