30 POINTS PLEASE HELP ASAP!!!
An incomplete proof of 1- tanθcosθ/cscθ=cos^2 θ is shown.
Which of the following expressions could be used to complete the second step of the proof?

30 POINTS PLEASE HELP ASAP An incomplete proof of 1 tanθcosθcscθcos2 θ is shown Which of the following expressions could be used to complete the second step of class=

Respuesta :

It's the fourth option, 1 - sinθ/cscθ. This is due to the cancellation of cosθ in the numerator:

1 - (sinθ/cosθ × cosθ)/cscθ = 1 - sinθ/cscθ