Question

find the value of following :
cot(-900 degrree )​

Answer 1

-thita hai isliye pahle sin900 degree hoga sin 90×10+0 ans is zero

Answer 2

cot(900) = cot(5pi) [from degrees to radians]

cot(5pi) = cot(4pi+pi) = cot(pi) = cos(pi)/sin(pi) = -1/0

Therefore cot(900) is undefined

(If you want to keep it in degrees

cot(900) = cot(720+180) = cot(360+360+180) = cot(180) = cos(180)/sin(180) = -1/0)

i think it is correct