Is xy=yx distributive property

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

Find the area of a parallelogram with base 15 yards and height 21 2/3