Later reflected parallelogram abcd across the y-axis. if angle a is 115° and angle b is 65°, what is the degree measurement of angle a

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

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle