Question

In triangle ABC, angle b=90 , angle A=45, AC=3root2 find BC and AB

Answer 1

Step-by-step explanation:

Draw a right angled △ABC using given instructions:

Here sin30=

AC

BC

2

1

=

20

BC

Or BC=10 cm

By Pythagoras theorem:

(AB)

2

=(AB)

2

−(BC)

2

=(20)

2

−(10)

2

=300

AB=10

3

cm.

solution

Answer 2

Answer:

bc=3,ab=3

Step-by-step explanation:

c=45 because 45+90+c=180

since 2 angles are 45 their sides are equal

let bc be x

$(3\sqrt{2})^2=x^2+x^2\\18=2x^2\\x^2=9\\x=3$

bc=3,ab=3