Question

Triangle ABC is equal to 90 degree BC equal to 10 cm angle c equal to 45 degree find ab and ac

Answer 1

in ∆ABC

Angle c is 45', angle b is 90'

now we have to find the first angle

90+45+a=180( angle sum property of∆)

135+a=180

a=180-135

a=45

angle a=45'

now tow angle of this triangle are equal means it is an isosceles triangle so it's two sides are also equal

therefore bc=ab=10 CM

now by Pythagoras theorem

ac= 10√2 cm