What is the simplified value of the expression below?
-2.8+58

55.2

Step-by-step explanation:

-2.8+58

=58-2.8=55.2

now we dont write -55.2 becuase we check which no. is greater . we take the sign of greatest no. so in this case it is 58

so ans=55.2

Do use mean sec and tan of theta (θ)? This is what I think you mean.

If cscθ = 13/5, sinθ = 5/13 because cscθ = 1/sinθ.

We also know that...

cos²θ + sin²θ = 1

So...

cos²θ + (5/13)² = 1

cos²θ = 1-(5/13)²

cos²θ = 1 - 25/169

cos²θ = 144/169

cosθ = 12/13

tanθ = sinθ/cosθ

tanθ = (5/13)/(12/13) = 5/12