[sabre2th1]

I have the following equation:

y = t² +tcost

where t = pi/2

however when try to calculate y, I get an answer like ''2.46'', how do I get this in terms of π? (I think I have to change certain settings in my calculator)

[tommm]

What calculator do you have?

[sabre2th1]

(Original post by tommm)
What calculator do you have?

oh sorry, here:

http://www.google.co.uk/products/cat...ed=0CHcQ8wIwAA

[CHY872]

Surely the answer is just pi^2/4?

[TenOfThem]

(Original post by CHY872)
Surely the answer is just pi^2/4 + pi/2?

Surely Not


OP you should not need to use a calculator for this question

[CHY872]

(Original post by TenOfThem)
Surely Not


OP you should not need to use a calculator for this question

(fixed, read sin not cos :P)

[Brand New Eyes]

(Original post by TenOfThem)
Surely Not


OP you should not need to use a calculator for this question

This.

(Original post by sabre2th1)
I have the following equation:

y = t² +tcost

where t = pi/2

however when try to calculate y, I get an answer like ''2.46'', how do I get this in terms of π? (I think I have to change certain settings in my calculator)

In such case only use your calculator to calculate the trig values i.e. cos(π/2) = 0 [if you dont remember]

Then treat pi as if it were algebra to leave it in the for of π there is not a calculator mode for this

[sabre2th1]

(Original post by TenOfThem)
Surely Not


OP you should not need to use a calculator for this question

Oh true, thanks.. if the question was more complicated I would have to change the setting though..?

[TenOfThem]

(Original post by sabre2th1)
Oh true, thanks.. if the question was more complicated I would have to change the setting though..?

If it needed a calculator there would be no requirement to give the answer in terms of