Prove that sec^4 (x)=1+2 tan^2 (x)+tan^4 (x)

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62