<em>Answer:</em>
<em>The answer is 83</em>
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<em>Hope this helps:3</em>
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I´d say "d" is the distance from the eye to the wall.
Now substracting 1.2-1 you´ll get the distance of the wall of the smallest triangle = 0.2 And you do 1.5-0.2= 0.3 that´s the distance of the wall of the other triangle. Then you solve everything with Pitagoras theorem. You have 2 rectangle triangles.
B+alfa=45°
tan^-1(0.2/d)=B
tan^-1(1.3/d)=alfa
THEN:
tan^-1(0.2/d)+tan^-1(1.3/d)=45°
Now you have 3 ecs and 3 variables.
alfa,B and "d"
Answer:
2.5-5
Step-by-step explanation:
Answer:
99
Step-by-step explanation:
99 x 9= 891
Just divide 891 by 9 to give you your answer;)
Multiplication because you undo it
