Finished

[echo aurora]

For the first one, have a perpendicular drawn from B to the ground

Base gets divided as X and 350-X

Use tan for each of the sides and eliminate the common height

Tan(52°) = height from B/X
Height from B = tan(52°)*X

Tan(34°) = height from B/350-X
Height from B = Tan(34°)*(350-X)

Both are equal so
Tan(52)X = Tan (34)(350-X)

Find X and substitute it in any of the height equations above

Btw Tan(52) is ≈ 4/3

[warm belfry]

Fucking love you man ❤️ Will need to solve the bottom one at some point later. You are a legend ❤️

[warm belfry]

Thanks @echo aurora

[desert beacon]

@warm belfry has given 1 rep to @echo aurora