Question

cosec²30.sin²45 minus sec²60​

Answer 1

Answer:

you are in which class?

Answer 2

cosec²30.sin²45 - sec²60

$= {2}^{2} \times( 1 \div \sqrt{2} ) {}^{2} - 2 {}^{2}$

= 4×1/2-4

= 2-4

= -2