help with trig identity proof | Revision Server | Page 1

plush ingot Jan 22, 2024, 4:34 PM

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5b please

dusk talon Jan 22, 2024, 4:35 PM

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the answer is 2

plush ingot Jan 22, 2024, 4:36 PM

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pls dont msg if u cant help

dusk talon Jan 22, 2024, 4:36 PM

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its 2 tho

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<@&791435371564892232>

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thomas the tank engine

prisma crag Jan 22, 2024, 4:45 PM

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1/cosθ - cosθ/1

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so 1/cosθ - cos²θ/cosθ

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so 1-cos²θ/cosθ

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we know that 1-cos²θ is sin²θ

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so sin²θ/cosθ

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but we want a tan

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so that can be rewrote as sinθ(sinθ/cosθ)
and sinθ/cosθ=tanθ
giving us required sinθtanθ

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@plush ingot

plush ingot Jan 22, 2024, 4:51 PM

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thank you sm

prisma crag Jan 22, 2024, 4:53 PM

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np

prisma crag Jan 22, 2024, 4:54 PM

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it is definitely not 2

#help with trig identity proof