lgg23 4 years ago Rewrite the expression as an allgebraic expresion in x: cos(arc cos x + arc sin x) = ?

|dw:1328489275470:dw| In the diagram above $$\cos(\alpha)=x$$ and $$\sin(\beta)=x$$. therefore:$\cos(\arccos(x)+\arcsin(x))=\cos(\alpha+\beta)=\cos(90)=0$