Math, asked by paraswaningmailcom, 1 year ago

sin48 × sec 42 + cos 48 × cosec 42 =2

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Answered by Anonymous
1
sec 42 = cosec(90-42)=cosec48
similarly cosec 42=sec 48
sinA × cosec A=1
cosA *sec A=1
1+1=2hence proved

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Answered by gsnarayana
2
sin 48  x  sec 42 + cos 48  ×  cosec 42

sec 42=sec(90-48)                                                cosec(theta)=1/sin(theta)

          =cosecc48                                                     sec(theta)=1/cos(theta)

cosec 42=cosec(90-48)

                =sec (42)

Sin48 × cosec 42 + cos 48 × sec 42

=>1+1

=>2

gsnarayana: sec is reciprocal of cos
gsnarayana: hence sin
gsnarayana: sin x cosec =1
paraswaningmailcom: ok ok understood
paraswaningmailcom: thnku
gsnarayana: sec x cos=1
gsnarayana: anyway its my pleasure to help you
gsnarayana: really did you understand
paraswaningmailcom: yes thnku☺
gsnarayana: ok then
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