Question

If ∆ ABC right angled at C angle A = 45° ,BC = 7 cm find angle B , angle AB and angle AC​

Answer 1

Answer:

things rhyme or reason to be with u and u know what

Answer 2

angle a + angle b + angle c = 180 ( sum angle property of the ∆)

now 45+90+ angle B= 180

now we get angle b = 45

and hence angle A = angle b

it is an isosceles right triangle

AC = BC = 7 cm

and as per pythogorous therom

(AB)^2 = (AC)^2 + (BC)^2

(AB)^2 = 7^2 + 7^2

that is (AB)^2 = 49 + 49

AB = root 98

now. we get AB as root 98

and

I hope it helps you mate

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