Question

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Answer 1

Answer:

angle A is 45°

AC = 4.2

Step-by-step explanation:

because

AB = BC

therfore, angle BAC = angle BCA ( angle opposite to equal side are equal )

let angle A = angle C = x

now, in triangle ABC

angle A + angle B + angle C

x+90°+x = 180° ( angle sum property )

2x + 90° = 180°

2x = 180°-90°

2x = 90°

x = 90°÷2

x= 45°

SO, angle A = 45°

and by Pythagoras theorem

H²= B²+P²

H²= 3²+3²

H²= 9+9

H²= 18

H= √18

H=4.2