Question

ayuda porfa le doy corona a la mejor respuesta​

Answer 1

$sen (60)^{2}+cos(30)^{2}$

$(\frac{\sqrt{3} }{2})^{2} +\frac{\sqrt{3} }{2})^{2}$

$2*(\frac{\sqrt{3} }{2})^{2}$

$2*\frac{3}{4}$

$\frac{3}{2}$  

$sen(30)^{2} +sen(30)=2x\\(\frac{1}{2})^{2}+\frac{1}{2}=2x\\\frac{1}{4}+\frac{1}{2}=2x\\\frac{3}{4}=2x\\2x=\frac{3}{4}\\x=\frac{3}{8}$