Minta bantuannya yaaa :))

By Admin ReiPosted on December 6, 2022

Minta bantuannya yaaa :))

Minta bantuannya yaaa :))

$huge{a.}$

$2~sin~x=1$

$sin~x=frac{1}{2}$

$x=30degree~~~atau~~~x=150degree$

$red{huge{sf HP~:~left{~30degree~,~150degree~right}}}$

$\text{[math]}$

$huge{b.}$

$cos~2x=-frac{1}{2}$

$2x=120degree~~~atau~~~2x=240degree$

» Untuk $2x=120degree$

$2x=120degree+left(ktimes 360degreeright)$

$x=60degree+left(ktimes 180degreeright)$

¤ $k=0to x=60degree$

¤ $k=1to x=240degree$

» Untuk $2x=240degree$

$2x=240degree+left(ktimes 360degreeright)$

$x=120degree+left(ktimes 180degreeright)$

¤ $k=0to x=120degree$

¤ $k=1to x=300degree$

$red{huge{begin{array}{ccc}sf HP~:~left{~60degree~,~120degree~,right.\left.240degree~,~300degree~right}end{array}}}$