kierragonz23 kierragonz23

01-05-2018
Mathematics

contestada

If sin θ = 3 over 7 and tan θ < 0, what is the value of cos θ? (1 point)

Respuesta :

riyanandola riyanandola

01-05-2018

Answer:

−45

Explanation:

Since tan(θ)=34>0 and sin(θ)<0, θ is in quadrant 3 (since tan(θ)>0 iff θ is in quadrant 1 or 3 and sin(θ)<0 iff θ is in quadrant 3 or 4).

cos(θ) must then be negative.

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