Question

Please help me asap!

Answer 1

Answer:

m∠BAC=45°

Step-by-step explanation:

Firs we graph the given points to see the shape of triangle.

We can clearly see that triangle BAC is a right angle triangle whose sides BA and BC both are equal to 4 units.

We know that equal sides of triangle corresponds to equal angles.

Hence

∠A = ∠C ...(i)

We know that sum of all three angles of a triangle is 180°. So we can write

∠A + ∠B + ∠C=180°

∠A + ∠B + ∠A=180°   {from (i) }

∠A + 90° + ∠A=180°   {∠B is right angle}

2∠A + 90° =180°  

2∠A = 90°

divide both siide by 2

∠A = 45°

∠A and ∠BAC are same

Hence

m∠BAC=45°