23.5. 1) sin(90°- a) + cos(180° + a) + ctg(270° - вопрос №16713158235190180270360290 от Est19xx1 04.03.2022 16:09

Question

Алгебра: 23.5. 1) sin(90°- a) + cos(180° + a) + ctg(270° - a) + tg(360° - a); 2) cos(90° + a) - sin(180° + a) + ctg(270° + a) + tg(360° + a);​

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решение на фотографии...

23.5. 1) sin(90°- a) + cos(180° + a) + ctg(270° - a) + tg(360° - a); 2) cos(90° + a) - sin(180° + a) + ctg(270° + a) + tg(360° + a);​