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3 years ago

A ladder placed 7 feet away from a wall,and makes 45 angle with ground.what is the length of the ladder?

Mathematics

1 answer:

elixir [45]3 years ago

5 0

Answer:

L = 14/ $\sqrt2}$ OR 9.899

Step-by-step explanation:

cos(angle) = adjacent/ hypotenuse

hypotenuse = length of ladder

adjacent = 7 feet

length of ladder = L

1/L = cos(45)/7

L = 7/cos(45)

MAKE SURE CALCULATOR IS IN DEGREE MODE

L = 7/( $\sqrt{2}$ /2)

L = 14/ $\sqrt{2}$

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