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English Senior High

こういった問題を早く解けるようにするにはどうしたら良いでしょうか。 読み方のコツとかあれば教えてください😭

T) Read the following passage, and for each of the numbered spaces 【31】- 【35】, hoose the most suitable word from those given below (1-8). Use each number only one time. [67 皮本日 Retirement is the stage when a husband and wife finally have the chance to spend time together, free from the stresses and strains of working life. But far from being an era of relaxed contentment, retirement can actually be a stressful experience for couples. Academics have (【31】 ) that many wives actually begin to suffer from “retired husband syndrome” once their men give up work. They discovered that nearly half of women complained of ( 【32】 ) levels of stress, depression and sleeplessness after their husbands retired. And to make matters worse, Italian researchers also found that with every extra year the husband spent in retirement, the wife's condition became worse. They said that the problem does not only affect housewives, but can be even worse for women who are still (【33】 ) while their husbands stay at home. “We have found that retirement effects are stronger for employed women, who are already stressed by their job and have( 【34】 ) time to deal with the additional requests by their retired husbands," they said. Part of the cause of greater stress was that women were faced with an increase in housework, the authors wrote. They also had to deal with the added burden of reduced income, an extra concern' for both partners. The research was ( 【35】 ) out by social scientists Dr. Marco Bertoni and Dr. Giorgio Brunello, from the University of Padova, who analysed interviews with 840 Japanese Women between 2008 and 2013. 1. carried 2. increasing 3. less 4. much 5. reducing 6. reported 7. suitable 常 () 8. working 帰 副内王 蓄田

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Mathematics Senior High

(2)のまるで囲んでいるところがわかりません。なぜなるのか教えて欲しいです。

a o 補充例題127 三角形の形状決定 次の等式を満たす△ABC はどのような形をしているか。 (1) ccos B=bcos Cn (2) asinA+bsinB=csinC 194 (佐賀大 補充12 CHART OLUTION 辺だけの関係に直す 三角形の辺や角の等式 なお、三角形の形状は, その三角形がただ一通りに走まるように的確に答っ、 参考角だけの関係に直 と,正弦定理から c=2RsinC 解答 (1) 余弦定理により,与えられた等式は c'+a-6 a'+8-c -=6. 2ab 2ca b=2RsinB niet c+a°-6_α°+ぴー 2a これらを与式に代入し 理すると tanB=tan0 よって B=C (しかし,いつもこのよう うまくいくとは限らない よって 2a 両辺に2aを掛けて 2c=26° c+a-6°=a°+6-c° c=6° ゆえに すなわち b>0, c>0 であるから よって,△ABCは AB=AC の二等辺三角形 (2) AABC の外接円の半径をRとすると,正弦定理により c=b nieiS=Dd すると -Rの断りを忘れない。 うにする。 図におい aies b a sin A= sin B= sinC=。 S 2R 2R 2R これらを条件の式に代入して led'niaAS+ieA ー( SIna 6? 2RT2R (8nie+ Aaia) ()(ania+A 1B:AC 辺だけの関係に直す。 2R 両辺に2Rを掛けて よって,△ABC は ZC=90° の直角三角形 a°+8=c° から 00 INFORMATION 三角形の形状の答え方 200 (8a0b 三角形の形状を答えるとき, 単に,「二等辺三角形」とか「直角三角形」だけでは。 答として不十分である。等しい辺や直角である角も必ず示しておくようにする。円 上の解答では (1) AB=AC でそれを示している。 (2) ZC=90° PRACTICE…1279 次の等式を満たす△ABCはどのような形をしているか。 as 5のこ (1) bsin?A+acos'B=a

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