Question

Find the distance between the points P(a cos 35°, 0) (0, cos 55°)

Answer 1

Answer:

Step-by-step explanation:

A(acos35,0) B=(0,acos55)

AB=√(acos35-0)²+(0-acos55)²

AB=√a²cos²35+a²cos²55

AB=√a²(cos²35+sin²(90-55))

AB=√a²(cos²35+sin²35)

AB=√a²(1)

AB=a unit

Answer 2

Answer:

A(acos35,0) B=(0,acos55)

AB=√(acos35-0)²+(0-acos55)²

AB=√a²cos²35+a²cos²55

AB=√a²(cos²35+sin²(90-55))

AB=√a²(cos²35+sin²35)

AB=√a²(1)

AB=a unit