Jawaban:
D. akar dari 76
Penjelasan:
A = 4
B = 6
alpha = 60⁰
A + B = ....?
[tex] \sqrt{ {4}^{2} + {6}^{2} + 2.4.6 \: cos \: {60}^{o} } [/tex]
[tex] \sqrt{16 + 36 + 2.4.6. \frac{1}{2} } [/tex]
[tex] \sqrt{16 + 36 + 24 } [/tex]
[tex] \sqrt{76} [/tex]
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Jawaban:
D. akar dari 76
Penjelasan:
A = 4
B = 6
alpha = 60⁰
A + B = ....?
[tex] \sqrt{ {4}^{2} + {6}^{2} + 2.4.6 \: cos \: {60}^{o} } [/tex]
[tex] \sqrt{16 + 36 + 2.4.6. \frac{1}{2} } [/tex]
[tex] \sqrt{16 + 36 + 24 } [/tex]
[tex] \sqrt{76} [/tex]
Demikian, semoga membantu...