3 years ago

Find the length of side AB Give your answer to 1 decimal place

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

8 0

Answer:

First to find AB we use cosine

cos ∅ = Adjacent / hypotenuse

AB is the adjacent

BC is the hypotenuse

cos ∅ = AB/AC

cos 70 = AB / 8

AB = 8 cos 70°

AB = 2.736

AB = 2.7cm to one decimal place

Hope this helps

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