If sinθ=4/5 and cosθ<0,find the exact value of cosθ and tanθ
help me!
cosθ < 0 and sinθ > 0 means θ is in QII
The triangle is obviously a 3-4-5 triangle, so
cosθ = -3/5
tanθ = -4/3
help me!
The triangle is obviously a 3-4-5 triangle, so
cosθ = -3/5
tanθ = -4/3