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TGAU Mathemateg Datrys Problemau Siâp a Mesur Haen Uwch

TGAU Mathemateg Datrys Problemau Siâp a Mesur Haen Uwch. Mae gan y triongl yma arwynebedd o 14cm². Cyfrifwch werthoedd posibl yr ongl x ac y. 8 cm. 7 cm. Help llaw. 20 °. Defnyddiwch y rheol Sin ar gyfer arwynebedd i’ch helpu darganfod yr ongl x.

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TGAU Mathemateg Datrys Problemau Siâp a Mesur Haen Uwch

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  1. TGAU Mathemateg DatrysProblemau Siâp a Mesur HaenUwch

  2. Mae gan y trionglymaarwynebedd o 14cm². Cyfrifwchwerthoeddposibl yr ongl x ac y. 8cm 7cm Help llaw 20° • Defnyddiwch y rheol Sin argyferarwynebeddi’chhelpudarganfod yr ongl x. • Mae’rcwestiwnynawgrymubodmwy nag un gwerthposibargyfer yr onglyma. Defnyddiwchgraff Sin iddarganfodgwerthoeddposibargyfer x. • Defnyddiwcheichatebioniddarganfodgwerthoeddposib y. • .

  3. Ateb Arwynebedd y triongl 30˚ = C

  4. Ateb Mae ynamwy nag un atebposib, rhaiddefnyddiograff sin iddarganfod yr onglarall. arall. 30 180 – 30 = 150 Felly: x = 30° neu 150°

  5. Ateb 30° • 150° 7cm 7cm 8cm 8cm neu 20° 20° Darganfod y Os yw x yn 150˚: y = 180 – 150– 20 y = 10˚ Darganfod y Os yw x yn 30˚: y = 180 – 30 – 20 y = 130˚ neu

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