Предмет: Геометрия, автор: ARTYR131202

O центр окружности BD её диаметр,ABхорда.Найди уголAOD,если известно,что угол OAB=57градусов

Ответы

Автор ответа: Tanyazzzim

0

Проведем радиус АО. Тк радиусы равны, то треугольник АОВ -равнобедренный. Значит углы у оснавания равны. Значит угол ВАО = углу АВО =57 Чтобы найти угол ВОА нужно воспользоваться свойством треугольника. 180- (57+57) =66 тк ВОА смежен с углом АОД, то 180-66=114

Автор ответа: ARTYR131202

0

это правильно

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Литература, автор: taisiadance

составить диалог о культуре общения между дедушкой и трёхлетним внуком
СРОЧНО!!!!!!!

6 лет назад

Предмет: Литература, автор: matyushinayekaterina

О чем это стихотворение? О какой картине Рембрандта пишет в стихотворении поот? 3) Дайте развернутый ответ на вопрос «Какова мораль библейской при написана картина Рембрандта?». Используйте цитаты о библейской

6 лет назад

Предмет: Английский язык, автор: MAXCHE05

1. HOW MANY CONDITIONAL TENSES ARE THERE IN ENGLISH GRAMMAR?
A ONE
B TWO
C THREE
D FOUR
2. WHICH OF THE FOLLOWING IS AN EXAMPLE OF THE ZERO CONDITIONAL?
A IF I WENT OUT IN RAINY WEATHER WITHOUT AN UMBRELLA, I WOULD GET WET.
B I WILL TAKE MY UMBRELLA WITH ME TODAY, BECAUSE IT MIGHT RAIN.
C IF YOU REMEMBERED TO TAKE YOUR UMBRELLA WITH YOU, YOU WOULDN'T GET WET.
D IF SHE HAD TAKEN HER UMBRELLA WITH HER, SHE WOULDN'T HAVE GOT WET.
E IF YOU GO OUT IN RAINY WEATHER WITHOUT AN UMBRELLA, YOU GET WET.
3. WHICH OF THE FOLLOWING IS AN EXAMPLE OF THE FIRST CONDITIONAL?
A WHERE WOULD YOU LIKE TO GO ON HOLIDAY IF YOU HAD PLENTY OF MONEY?
B IF I HAVE ENOUGH MONEY, I WILL GO TO THE SOUTH OF FRANCE FOR A LONG HOLIDAY.
C THE SOUTH OF FRANCE IS AN EXPENSIVE PLACE TO GO FOR A HOLIDAY.
D IF I HAD ENOUGH MONEY, I WOULD GO TO THE SOUTH OF FRANCE FOR A LONG HOLIDAY.
E SHE WOULD HAVE GONE TO THE SOUTH OF FRANCE FOR A LONG HOLIDAY IF SHE HAD NOT ALREADY SPENT ALL HER MONEY.
4. WHICH OF THE FOLLOWING IS AN EXAMPLE OF THE SECOND CONDITIONAL?
A I CAN'T GIVE YOU A LIFT TO THE SHOPS, BECAUSE I DON'T HAVE A CAR.
B IF I HAD A CAR, I WOULD GIVE YOU A LIFT TO THE SHOPS.
C I WILL GIVE YOU A LIFT TO THE SHOPS IF YOU DON'T MIND WAITING FOR TEN MINUTES.
D IF MY CAR HADN'T BROKEN DOWN, I WOULD HAVE GIVEN YOU A LIFT TO THE SHOPS.
E MY FRIEND ASKED ME TO GIVE HER A LIFT TO THE SHOPS, BUT MY CAR HAD BROKEN DOWN.
5. WHICH OF THE FOLLOWING IS AN EXAMPLE OF THE THIRD CONDITIONAL?
A THE TV WILL WORK IF YOU PLUG IT IN FIRST.
B IF WE HAD A MORE MODERN TV SET, WE WOULD HAVE A LOT MORE CHANNELS TO CHOOSE FROM.
C I WOULD HAVE WATCHED MY FAVOURITE TV PROGRAM LAST NIGHT IF WE HAD NOT HAD A POWER CUT.
D I WILL WATCH MY FAVOURITE TV PROGRAM TONIGHT IF I CAN FINISH MY WORK IN TIME.
E I CAN'T WATCH MY FAVOURITE TV PROGRAM TONIGHT BECAUSE IT HAS BEEN REPLACED WITH A FOOTBALL MATCH.
6. IF IT'S WARM AND SUNNY TOMORROW, WE _____________ SWIM IN THE SEA. (1ST CONDITIONAL)
A COULD
B MAY
C MIGHT
D WILL
E WOULD
7. IF YOU DIDN'T EAT SO MUCH LATE AT NIGHT, YOU __________ SLEEP BETTER. (2ND CONDITIONAL)
A CAN
B MAY
MIGHT
C SHOULD
D WILL
E WOULD
8. IF HE HAD WORKED HARDER AT SCHOOL, HE __________ GOT A PLACE AT UNIVERSITY. (3RD CONDITIONAL)
A CAN HAVE
B MAY HAVE
C MIGHT HAVE
D SHOULD HAVE
E WILL HAVE
F WOULD HAVE
9. THE ZERO CONDITIONAL IS USED FOR:
A UNLIKELY OR IMPOSSIBLE THINGS
B REAL OR POSSIBLE SITUATIONS
C THINGS THAT ARE TRUE IN GENERAL
D THINGS THAT ARE NOT TRUE AT ALL
E SOMETHING THAT DIDN'T HAPPEN IN THE PAST, AND IT'S TOO LATE NOW
10. THE SECOND CONDITIONAL IS USED FOR:
A UNLIKELY OR IMPOSSIBLE THINGS
B REAL OR POSSIBLE SITUATIONS
C THINGS THAT ARE TRUE IN GENERAL
D THINGS THAT ARE NOT TRUE AT ALL
E SOMETHING THAT DIDN'T HAPPEN IN THE PAST, AND IT'S TOO LATE NOW

6 лет назад

Предмет: Математика, автор: Аноним

помогите!! Нарисуй треугольник с тупым углом. Можно ли нарисовать треугольник с двумя тупыми углами????

10 лет назад

Предмет: Математика, автор: Kate306

В словах василёк,гладиолус,левкой,магнолия,хризантема ,,спрятался'' волшебник

10 лет назад