Question

Let θ be an angle in quadrant 3 such that secθ= -(5)/(4)
Find the exact values of cotθ and sinθ

Answer 1

in quadrant 3, tan is +ve while sin and cos are -ve

sec x=(-5/4)
cosx = -4/5

y=sqrt(25-16)=3
sinx=-3/5

cotx=cos/sin =....
secx = -5/4 as it is given
cscx =1/sin=.....