Question

Help!!

Evaluate the expression exactly... Sin(-90) + Csc(90)

Answer 1

sin(-90)=-1 and cos(90) = so its
-1

Answer 2

from the trigonometric circle

Answer 3

actually its Csc(90) which is 1

so easy from here

Answer 4

csc>cosine ??

Answer 5

the reason csc(90) = 1 is that csc = 1/sin and sin(90) = 1

so csc(90) = 1/1

Answer 6

not really familliary with the englisht tearm

Answer 7

cosecant... is csc... cosine is cos...

cosecant = 1/sin

Answer 8

my bad