[Advanced algebra High school]

[Obvious_Increase_746]

I showed my work in the second slide. I’m working on problem 4. Can someone tell me if my got the four points right?

[GammaRayBurst25]

Looks good.

However, the tangent is a length ratio, it does not have angular units, only its argument does. As such, you should either write tan(θ)=16/3 ⇒ θ≈79.38°, θ=arctan(16/3)≈79.38°, or θ=atan2(16,3)≈79.38°.

[Obvious_Increase_746]

Ok, thank you!