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English Senior High

訳と構文が分かんないです 1の③です

(24) 困シせん へに飛かい… him to dress like a doctor or lawyer, but he always dressed like my What my father wore embarrassed me as a young man. I wanted *I をさせる father. He wore old jeans and snapped shirts. I blamed the way he dressed for my social failures. I felt that girls 5 laughed at me because they' d seen him mowing" the grass in cut-offs" and black boots. I asked him what even at age fourteen struck me as cruel and wrong. “Why," I asked, "don' t you dress 'nice," like my friends' fathers?" He held me with his sad, shocked eyes and searched 2. for an answer. Then he said, "I like my clothes." An hour later my mother stormed into my room, slapped* me hard OT across the face and called me an “ungrateful little fool." ①In time they forgave me, and as I matured I realized that girls avoided me not because of my father but because of his son. ②I realized that my mother had slapped me because my father could not, and it soon 15 became clear that what he had really said that night was that there are things more important than clothes. He' d said he couldn' tspend even five cents on himself because there were things I wanted. Without another word, my father said, "You' re my son, and I make sacrifices so that your life will be better than mine." For my high-schoo! graduation, my father arrived in a suit. 0% Somehow he seemed taller, more handsome and impressive. It wasn' t the suit, of course, but theman. I didn' t see it again until his funeral. On the morning of his funeral, I took the suit out of his closet and changed into it. I gathered up the courage to study myself in his 25 mirror, where I appeared small and insignificant. ③AndI stood there for some time, facing myself in my father' s mirror, weeping and trying to imagine- my father' s clothes. (注)mow 草を機械で刈る slap 平手でたたく grow into (H14. 3) cut-offs ひざ上で切ったジーンズ -as I will for the rest of my life the day IlI -47-

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Mathematics Senior High

数IIの4STEPを使ってる者です。 三角関数でわからないところがあったので、いくつか質問させていただきます。 分かる部分だけでも答えてくだされば嬉しいです。 282(2)、①のところの不等号がどうして逆なのかわかりません。 287(1)、3つ目のイコールのところがな... Read More

呼は 77 よって、等式を満たす 0が存在するための条 件は,tについての2 次関数ののグラフが, 0<0<寄くのくま (4) 2sin?0 -4<5cosθ から er 2(1-cos'0)-4<5cosθ 2cos?0 +5cos0 +2>0 (cos0 +2)(2cos@ +1)>0 cos0 +2>0 であるから, ① より -1Sts1において直 線 y=a と共有点をも つことである。 よって -1 ゆえに y=a ゆえに,図から 2cos0 +1>0 -Ss1 よって 1 cos0>- 2 0<0<2x であるから, 解は 284 (1) sin 195° = sin(150°+45°) 030<,くの<2 = sin 150°cos45° + cos150°sin45° --号) 1 1 (5) 2cos'0<sin0+1から 2(1-sin?0)<sin0 +1 2sin?0 + sin0-120 (sin0 +1X2sin0-1)20 sin0 +120 であるから, ①より 2 V2 V2 -V6 よって 4 ゆえに (2) cos195° =cos(150°+45°) =Cos150°cos 45° - sin150°sin 45° nist sin0 +1=0 または 2sin0 -1N0 V3 1 V2 V6 +V2 1 1 ニー 1 sin0 =-1 または sin0>- 2 2 2 te よって 0S0<2x であるから 4 (3) tan105° = tan(60°+45°) 3 sin0 = -1 のとき 0= 2" tan60° + tan45° 1- tan60°tan45° 3+1 1-3-1 nezjのと したがって, 解は 0=,品nen ma sin0 > V3 +1 1-3 ==2-V3 5 (1-V3X1+V3) 11 (4) sinr=sin(エ+ (6) sin 0<tan0 から よって tan0cos0 < tan0 tan0(1-cosé0)>0 1-cos020 であるから, ① より tan0>0 かつっ 1-cosθキ0 = sinrcos+ cosTsin -TCOS V3 V2 V6-V2 1 2 0<0<2x であるから tan0>0のとき 0<0<号, xく0くら。 4 1-cos0 キ0 のとき 0キ0 11 COS- -π=COS 12 3 したがって, 解は0<0<, てく0く rcos-singrsin =COS -TCOS V3 2 V2 1 1 1 283 等式を変形すると Icos'0 - sin0=a 2 2 y=-cos'0 - sin0, sin0=tとおくと VZ + V6 4 y=ー(1-sin'0)I sin0 13 -T= tan 12 5 ーエ+ 6 (6) tan 12 5 の +1 V3 5 tan -ェ+tan- また -1SK」 5 1-tantan 1-1- 編 II II II

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