Test questions of mathematical function in grade one of senior high school Given that there is a point P (- radical 3, m) on the terminal edge of angle θ, and sin θ = 4 / 4 radical 2 m, the value of cos θ = Tan θ is obtained

Test questions of mathematical function in grade one of senior high school Given that there is a point P (- radical 3, m) on the terminal edge of angle θ, and sin θ = 4 / 4 radical 2 m, the value of cos θ = Tan θ is obtained

P is x = - √ 3, y = M
Then r = √ (3 + M & sup2;)
So sin θ = Y / r = m / √ (M & sup2; + 3) = √ 2m / 4
square
1/(m²+3)=1/8
m²=5
So cos θ = x / r = - √ 6 / 4
tanθ=y/x=±√15/3