5 In right triangle DEF, if mLF = 90 and cos E = sin D is equal to

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A: Euler's Formula used.

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A: Ans is given below

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A: As per our guidelines we are supposed to answer only one question. Kindly repost other question as…

Q: 22. Use trig identities to simplify the following expressions: 22a. cot θ csc θ, 22b. csc(α) cos(α)…

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Q: How did they get these values?

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