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Question
cot θ + tan θ = cosec θ sec θ
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Solution
डावी बाजू = cot θ + tan θ
= `cos θ/sin θ + sin θ/cos θ`
= `(cos^2 θ + sin^2 θ)/(sin θcos θ)`
= `1/(sin θcos θ)` .....[∵ sin2θ + cos2θ = 1]
= `1/sinθ . 1/cosθ`
= cosec θ . sec θ
= उजवी बाजू
∴ cot θ + tan θ = cosec θ sec θ
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RELATED QUESTIONS
cot2θ - tan2θ = cosec2θ - sec2θ
tan4θ + tan2θ = sec4θ - sec2θ
sec6x - tan6x = 1 + 3sec2x × tan2x
`tanθ/(secθ + 1) = (secθ - 1)/tanθ`
जर 1 – cos2θ = `1/4`, तर θ = ?
`(cos^2theta)/(sintheta) + sintheta` = cosec θ हे सिद्ध करा.
tan2θ – sin2θ = tan2θ × sin2θ हे सिद्ध करण्यासाठी खालील कृती पूर्ण करा.
कृती: डावी बाजू = `square`
= `square (1 - (sin^2theta)/(tan^2theta))`
= `tan^2theta (1 - square/((sin^2theta)/(cos^2theta)))`
= `tan^2theta (1 - (sin^2theta)/1 xx (cos^2theta)/square)`
= `tan^2theta (1 - square)`
= `tan^2theta xx square` .....[1 – cos2θ = sin2θ]
= उजवी बाजू
`(sintheta + "cosec" theta)/sin theta` = 2 + cot2θ हे सिद्ध करा.
`sqrt((1 + cos "A")/(1 - cos"A"))` = cosec A + cot A हे सिद्ध करा.
जर cos A + cos2A = 1, तर sin2A + sin4A = ?
