Question

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Answer 1

Ответ:

6. (90-а)+(90-в)+ф=180°, в=ф-а=97-39=58°

7. Н=0.69 м

а=90-30=60°

sinb=sin60/√1.5= 0.707, b=45°

L=1.03/tg30+0.69*tg45= 2.47 м