Question

The ratio of the beight of the wall and the length of the ladder put against it is 1:√2.What is the angle of elevation of the top of the wall from the ground?​

Answer 1

Answer:

45

Step-by-step explanation:

Height : Length = 1 : root2

Distance from foot of ladder to wall,

              Pythagores theorem : $hyp^{2} = alt^{2} + base^{2}$

                                                $base^{2} = hyp^{2} - alt^{2}$

                                                        $= \sqrt{2} ^{2} - 1$

                                                        $= 1$

This would satisfy only if angle of elevation is 45