Question

2) In A ABC, LABC = 90°, ZBAC = 45° and AC = 42cm fill in the boxes
to find AB​

Answer 1

Answer:

AB= 21

Step-by-step explanation:

angle ABC =90° and angle BAC=45°

therefore, angle ACB= 45 °

therefore,by 45°-45°-90° theorem

AB=1/2AC

AB=1/2×42

=21 cm