If cos(-x)=2/3, and tan x < 0, find: sin x and cot x

Answer 1

cos (-θ) = cos θ

cos θ = 2/3, θ is in QI or QIV

tan θ < 0, θ in in QII or QIV

θ is in QIV

Now draw and label a diagram and determine sin θ and cot θ