PLEASE HELP

in triangle abc, angle A is a right angle and m angle B=60 if AB=20ft, Find BC. If necessary round your answer to the nearest tenth @preetha @jigglypuff314 @emily.baarsch

Question

PLEASE HELP

in triangle abc, angle A is a right angle and m angle B=60 if AB=20ft, Find BC. If necessary round your answer to the nearest tenth @preetha @jigglypuff314 @emily.baarsch

jabez177 · Answer

Hello! :)

jabez177 · Answer

Do you remember what is the full sum of angles inside a Triangle? :)

hanuhmae · Answer

No :(

jabez177 · Answer

The inner angles of a triangle ALWAYS add up to 180 degrees. :) 
Angle A is a right angle. 
How many degrees is a right angle? :)

hanuhmae · Answer

90 degrees.

jabez177 · Answer

Right! :) 
Now we have 90 degrees and how much does it say angle B?

hanuhmae · Answer

60 degrees, right?

jabez177 · Answer

Right! :) 
So we have 90 and 60.
How much is 90 + 60? :)

hanuhmae · Answer

150 degrees

jabez177 · Answer

Riiiight! 
Now it's asking for BC.
Do you have any idea what that means? :)

hanuhmae · Answer

Is BC another angle?

jabez177 · Answer

Ugh! 
I kinda forgot this... :( 
@haleyelizabeth2017 :p

haleyelizabeth2017 · Answer

You would actually need to use trigonometry to solve this (:

jabez177 · Answer

See ya! :)

haleyelizabeth2017 · Answer

I think lol..

haleyelizabeth2017 · Answer

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Remember, SOH CAH TOA.

Can you figure out which one you need to use?

Sin is Op/Hypot, Cos is Adj/Hypot and tan is op/adj (: