Answer:

Step-by-step explanation:

Use distributive property.







Answer:
I think its c but I'm not sure. You need to ask a professional.
Step-by-step explanation:
Step-by-step explanation:
Let ABC be a right angled triangle where there's a right angle in B . Let the measure of the angle BAC be ∅. So,


Also,


Now adding the values of sin^2∅& cos^2∅,


But we know that
by applying Pythagorean Theorem
So ,

A because the starting values is not a negative