With Ankles Tutorial Level PENGO'S AQUATIC REVENGE
How can we find the
measure of ZRST?
90° + 20°
20
110° + 20°
110° - 90°
90° - 20°

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

Using inductive reasoning, what is the next two numbers in this set? 1,-7,13,-19 i got the numbers 14,-26 is that right?

Im so bad at fractions they are not my best math thing to work on