Question

without using table solve the following triangle ABC,right -angled at C,given
(iii) A = 45° and a = 7.
​

Answer 1

Steps of construction -

1. first draw a line segment AB=7cm

2.then with A as centre construct angle A =45°.

[in triangle ABC

you are given that A=45° and C=75°

so by angle sum property-

45+75+B=180

B=180-120

B=60°]

3.now with B as center construct angle B=60°

4.mark the point of intersection of Angle A and B as C.

Thus ABC is the required triangle.

Answer 2

Answer:

45°

Step-by-step explanation:

Given,

angel C=90°

and angel A=45°

we know that

angel A+B+C=180°.

45+B+90=180°

B+135=180°

B=180-135=45°