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Prove the trig identity: Cos x/1-sinx - Cos x/1+sin x = 2tan x

The sum of3x,4y and z

Perform the indicated operation X over x2-1 minus 3 over x2-2x+1

Calculate the following permutations: In how many ways can 5 different diplomas be placed?

Write an inequality for: The total bill for a lawnmower and 15 drawer pulls was within the family’s $400 budget. If he the lawnmower cost $325, find the maximum cost of each drawer pull

in a geometric sequence r=3 a2=12 find a10

If 30% of the students in a class made a B and there were 12 Bs how many students were in the class?

A dog weighs 20% more than it did three months ago. It weighs 36 pounds now. How much did the dog weigh three months.

If the cost of 1 ½ cup of dressing is $3.00, how much would the cost of 3 ½ oz be?

harry is on top of empire state 380 m and decides to throw his penny down with velocity 5m/s he makes awish what is the velocity of the penny 2 seconds later