w^2 = 15^2 + 16^2 - 2(15)(16)•cos(75)
w^2 = 225 + 256 - 480•cos(75)
w^2 = 481 - 480•cos(75)
Using the cosine formula, cos(75) = -0.2588190451
w^2 = 481 - 480(-0.2588190451)
w^2 = 481 + 124.07093846
w^2 = 605.07093846
w = √605.07093846
w ≈ 24.6
Therefore, the value of w is approximately 24.6.
w^2= 15^2+16^2-2(15)(16)•cos(75)
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