Question

Write an equation that could be used to find the measure of angle R.

A. 162 = 142 + 102 – 2(5)(6)(cos R)
B. 102 = 142 + 162 – 2(14)(16)(cos R)
C. 142 = 162 + 102 – 2(16)(10)(cos R)
D. 162 = 142 + 102 – 2(14)(10)(cos R)

Answer 1

so how would i type it in a calculator

Answer 2

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Answer 3

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