how do I calculate this 1/sinθ=1sin/() when θ=43? I don't get this formula . show steps

Answer 1

θ is just the name given as a place holder.
If you want to find 2x when x=3, you just use 2*3 = 6
sinθ is just a shorthand way of saying sin(θ)
so, if θ=43° then 1/sinθ = 1/sin(43°) = 1/0.682 = 1.466

Answer 2

that only explain the left side. what about the right side 1sin/()? does this mean 1sin(43)/(43)?

Answer 3

1sin/()
looks like a typo to me.