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Physics 8 Online
OpenStudy (anonymous):

https://s.yimg.com/hd/answers/i/0da9190cefa747bc8447c1b7182cb974_A.jpeg?a=answers&mr=0&x=1413159224&s=fa88d218167dadcba9f9ceb3116cea4f

OpenStudy (anonymous):

I have attached the image URL of a free body diagram. I am wondering if somebody can help me to understand the angles associated with this problem

OpenStudy (anonymous):

OpenStudy (anonymous):

My question is how to determine that the angles are equal ? whats the rules?

OpenStudy (amistre64):

|dw:1413152768187:dw|

OpenStudy (amistre64):

what do all the angles of a triangle add up to?

OpenStudy (anonymous):

180, i believe

OpenStudy (amistre64):

correct, so lets take the outside tiangle, the biggest one a + b + 90 = 180, therefore a+b = 90, right?

OpenStudy (anonymous):

yes, it must be 90

OpenStudy (amistre64):

|dw:1413152912557:dw|

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