camillebandeira225 camillebandeira225

08-08-2021
Mathematics

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trig..experts...help! Will give brainly!

trigexpertshelp Will give brainly class=

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xenia168 xenia168

08-08-2021

Answer:

Step-by-step explanation:

189² = 215² + 123² - 2(215)(123)cos x°

35,721 = 46,225 + 15,129 - 52,890 cos x°

35,721 = 61,354 - 52,890 cos x°

52,890 (cos x° ) = 25,633

cos x° = 25,633 ÷ 52,890 ≈ 0.4846

x° ≈ 61.01°

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