bantu menjawab yg b. saja peliss
Penjelasan:
[tex]fr = \sqrt{ {fba}^{2} + {fbc}^{2} + 2fba \times fbc \times \cos( \alpha ) } [/tex]
[answer.2.content]
Penjelasan:
[tex]fr = \sqrt{ {fba}^{2} + {fbc}^{2} + 2fba \times fbc \times \cos( \alpha ) } [/tex]
[answer.2.content]