Question

If
cosec = √5, find the value of
i 2-sin²-cos² ​

Answer 1

Answer:

cosec =√5

sin= 1/√5

cos = √(1-sin^2)

=√(1-1/√5)

2-sin^2-cos^2=2-1/5-[1-(1/√5)]

=9/5-1+1/√5

=4/5+1/√5

=[4+√5]/5