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Ex 3.1, 2 Find the degree measures corresponding to the following radian measures ("use " π" = " 22/7) (ii) –4 We know that Radian measure = 𝝅/𝟏𝟖𝟎 × Degree measure −4 = 𝜋/180 × Degree measure Degree measure = –4 × 𝟏𝟖𝟎/𝝅 Degree measure = –4 × 180/22 × 7 Degree measure = –((𝟒 × 𝟏𝟖𝟎 × 𝟕)/𝟐𝟐) Degree measure = –(𝟐𝟓𝟐𝟎/𝟏𝟏) = –("229" °" + " 𝟏𝒐/𝟏𝟏) = –("229" °" + " (1/11 " × 60" )^′ ) = –("229" °" + " (𝟔𝟎/𝟏𝟏)^′ " " ) = –("229" °" + 5 " 〖𝟓/𝟏𝟏〗^′ ) = –("229" °" + 5‘ + " (5 ′)/11) = –("229" °" + 5‘ + " ((𝟓 )/𝟏𝟏 " × 60" )^"‘’" " " ) = –("229" °" + 5‘ + " (𝟑𝟎𝟎/𝟏𝟏)^"‘’" " " ) = –("229" °" + 5‘ + " 300"‘’" /11) = –229° 5’ 27’’ nearly

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo