Question

cos 225-sin225+tan495-cor495
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Answer 1

Step-by-step explanation:

cos 225-sin225+tan495-cor495

= cos(270-45)-sin(270-45) +tan(360+135)-cot(360+135)

= -sin(45)+cos(45) + tan(135)-cot(135)

= -1/√2 +1/√2 + tan(180-45)-cot (180-45)

= 0- tan(45) -(-cot(45))

= cot 45 - tan 45

= 1-1

=0