Respuesta :

I got: cos²θ - sinθ

Does this seem familiar?

Work: 

cos
θ/secθ - tanθ

cosθ/1/cosθ - sinθ/cosθ

cos
θ/1 * cosθ/1 - sinθ/cosθ

cos²θ/1 - sinθ/cosθ

cos
³θ-sinθ/cosθ

cos
²θ-sinθ

Answer:

b) sin theta

Step-by-step explanation: