" Prove that "(0.85times0.85times0.85+0.15times0.15times0.15)/(0.85times0.85-0.85times0.15+0.15times0.15)=1" ."

Prove that (0.85xx 0.85xx 0.85 +0.15xx 0.15xx 0.15)/(0.85xx 0.85-0.85xx 0.15+0.15xx 0.15)=1 .

Prove that : (0. 87 \times 0. 87 \times 0. 87+0. 13 \times 0. 13 \times 0. 13)/(0. 87 \times 0. 87-0. 87 \times 0. 13 + 0. 13 \times 0. 13)=1

Prove that (0.85xx0.85xx0.85+0.15xx0.15xx0.15)/(0.85xx0.85-0.85xx0.15+0.15xx0.15)=1

If sqrt(0.09times0.9times a)=0.009times0.9times sqrt(b) , then (a)/(b) is

Evaluate: (0.8 xx 0.8 xx 0.8 + 0.5 xx 0.5 xx 0.5)/(0.8 xx 0.8 - 0.8 xx 0.5 + 0.5 xx 0.5)

Find the product: (-15)times0times(-18)

Evaluate the 2.85 div 1.5

Prove that cos35^(@)+cos85^(@)+cos155^(@)=0