Use the information given about the angle θ, 0≤θ≤2π, to find the exact value of the indicated trigonometric function.

cscθ=-5/2, tanθ0, find cos θ/2.

Question

Use the information given about the angle θ, 0≤θ≤2π, to find the exact value of the indicated trigonometric function.

cscθ=-5/2, tanθ>0, find cos θ/2.

loser66 · Answer

are you Vietnamese?

zpupster · Answer

csc=hyp/opp  1/opp/hyp = 1/sin= 1/-5/2 or 2/-5
us pythagorean to adjacent side

hyp^2 - Opp^2= adj^2
or 
sqrt(nyp^2-opp^2) = adj

anonymous · Answer

@Loser66: yes :)
@zpupster: thanks

loser66 · Answer

Can you read Vietnamese? Chi la nguoi Viet day. Neu em can hoi gi, neu biet chi se uu tien cho. hehehe

zpupster · Answer

You’re Welcome = Không Có Chi
No Problem = Không Sao