Question

TRIGONOMETRY... HELP FOR MEDAL?

If sin Θ = 2/3 and tan Θ < 0, what is the value of cos Θ?

Answer 1

Since sine =y/r, y=2 and r=3
Then x= sqrt[3^2-2^2]

sin(t) is positive and tan(t) is negative, t is the QII where x is negative a y is positive.

cos(t)= x/r= -sqrt(5)/3

Answer 2

Thank you so much! Can you help me with 2 more?

Answer 3

Send me the answers

Answer 4

Nvm I got a 100! Thanks so much. :)