Question

pls this question. ​

Answer 1

the answer for your question is as follows

(2)0

(3)99

Answer 2

$\sin(45 + 0) - \cos(45 - 0) \\ = \sin(90 - (45 + 0) - \cos(45 - 0) \\ = \cos(45 + 0) - \cos(45 - 0) \\ = 0 \\ \\ \\ b)0$


2)d)99