Rani

This page lists questions and answers that were posted by visitors named Rani.

Questions

The following questions were asked by visitors named Rani.

I'm sorry to double post; I don't want to seem impatient, but I really need help with this. Prove each idenity. 1+1/tan^2x=1/sin^2x 1/cosx-cosx=sinxtanx 1/sin^2x+1/cos^2x=1/sin^2xcos^2x 1/1-cos^2x+/1+cosx=2/sin^2x and (1-cos^2x)(1+1/tan^2x)= 1 I haven't e...

can someone please further explain my question on? it's just a farther bit down. The subject is "Math - help really needed" I think I almost got the answer, but I'm not sure where to go from there. really appreaite all the help so far as well; thank you....

If a population consists of 10,000 individuals at time t=0 years (P0), and the annual growth rate (excess of births over deaths) is 3% (GR), what will the population be after 1, 15 and 100 years (n)? Calculate the "doubling time" for this growth rate. Giv...

A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 55.6 kJ of heat. Before the reaction, the volume of the system was 7.60 L. After the reaction, the volume of the system was 2.00 L. Calculate the total internal energy change, Delta...

unscramble ecrfenine

Reasoning. If you live 71mi from a river, does it make sense to say you live about 80 mi from the river? Explain

Used books are being sold at $5 and used videos are being sold at $6. There are 175 total items sold and a total of $910 collected. How many videos were sold?

I want to have the details of the experiment title: Determine the equilibrium constant of a reversible reaction involving the iodine and the tri iodate ion reaction and also determine the gibbs free energy of the reaction.

an object at rest explodes into three pieces of equal mass. one moves east at 20 m/s a second moves southeast at 30 m/s what is the velocity of the third piece??

How do I find the image of O (0,0) after two reflections, first across x=a and then across y=b?

A 75 kg hockey player glides across the ice on his skates with steel blades. What is the magnitude of the force of friction acting on the skater?

What is the chemcal equation between ethanethiol and methoxide anyone?

t:3/4=7/8:15/16=

Suppose it costs c $260 to purchase us $243.23 .What is exchange rate ?

Answers

The following answers were posted by visitors named Rani.

oh, ok, I see. thank you all very much. I think I get it now, so hopefully I can actually get them on my own. :)

wait, for the first one if sin^2+cos^2=1, how did you even cancel some out?

okay, I'll try it out, thank you.

I'm really sorry. I don't want to sound stupid, but when I add tan^2x/tan^2x to 1/tan^2x I get 1+tan^2x/tan^2x and then the tans cancel out and I'm left with just one. Obviously, that's not correct, but I can't find my mistake.

but if I have identical denominators, why can't I just add the 1 to the tan^2X?

I haven't learned what cot and csc are. Can I still solve this with just tan, cos, and sin?

Pls help me. Pls tell me some bases (alkelis)other than any cleaning products.

Okay, I have figured this out. Total Items $$ Total Books 175-v 5 5(175-v) Videos v 6 6v Total 175 --- $910 5(175-v) + 6v = 910 875- 5v + 6v = 910 1v (or just v) = 910-875 v = 35, or 35 videos 35 videos at $6 each = $200 sold $910-200 = $710 left for book...

Sorry the "Total Items $$ Total" was supposed to be 3 columns.

16/7:4/9=15/14:t=

But yeh kaise kiya