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Let alpha and beta be angles such that P is the terminal point for alpha and Q is the terminal point for beta, and let R,S,T,U be the same as above:

Say that cos(alpha)=12/13 and cos(beta)=-4/5. Then if R = (r1,r2) and S= (s1,s2)
enter r1,r2,s1,s2.

 
 Jun 23, 2022
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\((r_1, r_2, s_1, s_2) = (-20/29, 21/29, -35/37, 12/37)\)

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 Jun 23, 2022

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