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[" 19."4[[1,1]]],[," "IT "(1)/(sif fy)dd...

[" 19."4[[1,1]]],[," "IT "(1)/(sif fy)ddot A cos(alpha+beta)=(4)/(5)],[,root(3)(81)0<=alpha,beta<=pi/4vec varepsilon" ,"(4)/(pi)tan2 alpha(sin(alpha-beta))/(pi)(1)/(cta)(5)/(1+pi)],[[" (a) "25/16," (b) "56/33],[" (c) "19/12," (d) "20/7]]

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