Let Θ = 150 degrees. Find the exact values of secΘ, tanΘ, and sinΘ

Anyone know how to do this? care to explain please?

Thanks!

Reference Angle is 30°, Quadrant is 2 => sine positive, cosine negative

SinΘ = sin30° = 1/2
TanΘ = -tan30° = -√3/3
SecΘ = -sec30° = -1/cos30°= -2√3/3

180 - 150 = 30°...thus - sec 30° , - tan 30° , sin 30°...

you do know about the fundamental triangles ??