LIVingproofwlavender LIVingproofwlavender

13-12-2019
Mathematics

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please Help it's due today I'm putting all my points into this please.

please Help its due today Im putting all my points into this please class=

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kenlingdad kenlingdad

13-12-2019

Answer:

0.308973

-sin 15°

Step-by-step explanation:

cos 2π/5 = cos 2 * π/5 = cos² π/5 - sin² π/5 = (0.8090)² - (0.5878)² = 0.308973

sin 10° cos 25° - cos 10° sin25° = sin (10° - 25°) = sin -15° = - sin 15°

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