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24-10-2022
Mathematics

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100PTS PLS HELP (4 PART QUESTION)

Find the exact value of the following:
1. cos195°
2. sin195°
3. tan195°
4. Verify the identity: sin(x+y)-sin(x-y)= 2cosxsiny

Please show all work! I'd prefer if you'd do it on paper and upload it! Thank you so much!! <3

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