I have the following equation If i set y= 60 and i solve i get root 2 over 2, howevef if i sub that back in the equation, i don't get 60 but I get about 68! Any help is appreciated. Here is what i did:
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is the equation ... or
Originally Posted by skeeter is the equation ... or This one if it's the other equation then root2/2 works... so what did i do wrong?
Originally Posted by sakonpure6 This one if it's the other equation then root2/2 works... so what did i do wrong? the whole thing ... if is in radians ... if is in degrees ... note that these are the principle solutions ... there are more.
Hello, sakonpure6! I don't understand your difficulty. If I set and I solve, I get However if I sub that back in the equation, I don't get 60 but I get about 68! . How? If , we have: . . . . . .
Originally Posted by Soroban Hello, sakonpure6! I don't understand your difficulty. If , we have: . . . . . . I multiplied root2/2 by 225 before taking it's cosine, that was my mistake there and for skeeter how did you get -10? shouldnt it be 10
my mistake ... if is in radians ... if is in degrees ...
alright thank you very much!
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