What is the volume round to the nearest whole number
*CONFUSED SCREAMING*

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Pranza plotted point a in the coordinate plane below.

Find cot x if sin x cot x csc x = √2