Question

if cos theta =-3/5, theta lies in third quadrant evaluate sin theta-cos theta/sin theta + cos theta​

Answer 1

Answer:

1/7

Step-by-step explanation:

θ lies in 3rd quadrant means , Tanθ will be positive . Which means we must take -ve value of sinθ

cosθ = -3/5

sinθ = √[1-(cosθ)^2] = √[1-9/25]

= -4/5

(Sinθ - cosθ)/(sinθ + cosθ)

=[ -4/5 - (-3/5)] /( -4/5 -3/5)

= (-1/5)/(-7/5)

= 1/7

Answer 2

ANSWER

REFER TO THE ATTACHMENT.....