Question

Abc is right angles triangle at b.If a is 45 degree then find cot c

Answer 1

Since triangle ABC is a right angled triangle at point B, and degree is 45 at point A, therefore the degree at point C, is also 45 degree.
(since : angle ABC +angle BCA+angle CAB=180*
90*+angle BCA +45*=180*
angle BCA=180*- 135*
angle BCA =45*)
Therefore, the degree at point C is 45 degree.
And the triangle is an ISOSCELES TRIANGLE