Prelim Further Trig Equation (1 Viewer)

[norez]

How do I do this?

 

[Handmedown]

 

[hscishard]

The t formula should work too.

 

[mirakon]

auxiliary angles are the best option , essentially what handmedown said

 

[ohexploitable]

Auxiliary angle method.

 

[norez]

Thanks.

 

[Omnipotence]

I prefer transformation formula for that question.