Which two ratios are equivalent to 10 : 12? 11: 13 and 20: 24 b. 10: 12 and 11: 13 c. 5: 6 and 20: 24

Which of the following statement about pascal's triangle are true?

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b