What grade are you in so I know what level you are on to help
8 sin2x - 10sinxcosx = 8*2sinXcosX-10sinXcosX = 16sinXcosX - 10sinXcosX = 6sinXcosX=3sin2x
What am I supposed to be helping with the picture you took is only showing examples
Answer:
You can buy 3 books 4 x 3 = 12
Step-by-step explanation: