Question

PLEASE HELP WITH STEPS 25 POINTS!!!! Simplify

Answer 1

Answer:

• - 1 - sin α

Step-by-step explanation:

Use identity:

• sin² α + cos² α = 1 ⇒ cos² α = 1 - sin² α = (1 + sin α)(1 - sin α)

Substitute this into given expression and simplify:

• cos² α / (sin α - 1) =
• (1 + sin α)(1 - sin α) / (sin α - 1) =
• - (1 + sin α) =
• - 1 - sin α