Question

4(cos 20° + cos 40º) =​

Answer 1

Answer:

6.82

the exact answer is this

Answer 2

Cos20 = 0.93 : Cos40 = 0.76

4(Cos20 + Cos40)

4(0.93 + 0.76)

4×1.69

6.76 (approx)

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