theta=70;L=1500;h=200;D=1;
eq=[l1+l2==L;
(cosd(theta)*cosd(x1)-sind(theta)*sind(x1))/x==cosd(x1)/l2;
(cosd(theta)*cosd(x1)+sind(theta)*sind(x1))/x==cosd(x1)/l1;
tand(x1)==D/(2*f);tand(x1)==x/y;cosd(theta)==h/(y+f)];
vars=[x1,l1,l2,f,x,y];
[x1,l1,l2,f,x,y]=solve(eq,vars)
The code is as above，the solution show
l1 =
7590603.4479823424160756070250191
l2 =
-7587603.8886555868349951502850662,I think the solution is wrong,but I don’t know what is wrong，Can anyone fix this?theta=70;L=1500;h=200;D=1;
eq=[l1+l2==L;
(cosd(theta)*cosd(x1)-sind(theta)*sind(x1))/x==cosd(x1)/l2;
(cosd(theta)*cosd(x1)+sind(theta)*sind(x1))/x==cosd(x1)/l1;
tand(x1)==D/(2*f);tand(x1)==x/y;cosd(theta)==h/(y+f)];
vars=[x1,l1,l2,f,x,y];
[x1,l1,l2,f,x,y]=solve(eq,vars)
The code is as above，the solution show
l1 =
7590603.4479823424160756070250191
l2 =
-7587603.8886555868349951502850662,I think the solution is wrong,but I don’t know what is wrong，Can anyone fix this? theta=70;L=1500;h=200;D=1;
eq=[l1+l2==L;
(cosd(theta)*cosd(x1)-sind(theta)*sind(x1))/x==cosd(x1)/l2;
(cosd(theta)*cosd(x1)+sind(theta)*sind(x1))/x==cosd(x1)/l1;
tand(x1)==D/(2*f);tand(x1)==x/y;cosd(theta)==h/(y+f)];
vars=[x1,l1,l2,f,x,y];
[x1,l1,l2,f,x,y]=solve(eq,vars)
The code is as above，the solution show
l1 =
7590603.4479823424160756070250191
l2 =
-7587603.8886555868349951502850662,I think the solution is wrong,but I don’t know what is wrong，Can anyone fix this? trigonometric functions；, equations MATLAB Answers — New Questions

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