Question

@girlnotonfire

Answer 1

If cos Θ = square root 2 over 2 and 3 pi over 2 < Θ < 2π, what are the values of sin Θ and tan Θ?

Answer 2

sin Θ = square root 2 over 2; tan Θ = −1

sin Θ = negative square root 2 over 2; tan Θ = 1

sin Θ = square root 2 over 2; tan Θ = negative square root 2

sin Θ = negative square root 2 over 2; tan Θ = −1

Answer 3

If cos Θ = square root 2 over 2 and 3 pi over 2 < Θ < 2π, what are the values of sin Θ and tan Θ?

If 3 pi over 2 < Θ < 2π Then the signs of sinx and tanx are both negative.

cos(x) = sqrt(2)/2. So sin(x) = -sqrt(2)/2 and tan(x) = -1.

sin Θ = square root 2 over 2; tan Θ = −1

sin Θ = negative square root 2 over 2; tan Θ = 1

sin Θ = square root 2 over 2; tan Θ = negative square root 2

sin Θ = negative square root 2 over 2; tan Θ = −1

Answer 4

how do you know that they are both going to be negative?