Math, asked by AbhinabaMitra10, 9 months ago

plz answer this above question and give explanations. don't spam plz.

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Answered by Anonymous

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Answer:

tanФ=cosαtanβ

sinФ/cosФ=(cosαsinβ)/cosβ

cosФ=sinβ/(cosαsinβ)/cosβ

cosФ=secαcosβ

Step-by-step explanation:

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