AS maths homework - help please?
Discussion
I can do most of my homework, but I'm stuck on this question:
Solve the following equation for 0 deg<#<360 deg , giving your answer to 1 decimal place:
4sin^2# = cos^2# [four sine squared theta equals cosine squared theta]
# = theta (symbol for an angle)
I think, using cos^2# = 1 - sin^2#, it becomes:
3sin^2# - 1 = 0
But this doesn't seem to give the answer. The answers should be 26.6, 206.6, 153.4, 333.4 degrees.
Any help would be great
>> Edited by m1spw on Monday 14th November 17:06
Solve the following equation for 0 deg<#<360 deg , giving your answer to 1 decimal place:
4sin^2# = cos^2# [four sine squared theta equals cosine squared theta]
# = theta (symbol for an angle)
I think, using cos^2# = 1 - sin^2#, it becomes:
3sin^2# - 1 = 0
But this doesn't seem to give the answer. The answers should be 26.6, 206.6, 153.4, 333.4 degrees.
Any help would be great
>> Edited by m1spw on Monday 14th November 17:06
m1spw said:
I can do most of my homework, but I'm stuck on this question:
Solve the following equation for 0 deg<#<360 deg , giving your answer to 1 decimal place:
4sin^2# = cos^2# [four sine squared theta equals cosine squared theta]
# = theta (symbol for an angle)
I think, using cos^2# = 1 - sin^2#, it becomes:
3sin^2# - 1 = 0
But this doesn't seem to give the answer. The answers should be 26.6, 206.6, 153.4, 333.4 degrees.
Any help would be great
Try
5 sin^2# - 1 = 0
Young of today... 
Size Nine Elm said:
I really disagree with cheating I'm afraid.
I agree. Your punishment is to write a short poem about a horse.
Look, its not my fault, I keep getting bollocked for getting 70 and 80%'s. Apparently, my maths teacher wants us to do the work, check the answers in the back of the text book and then re do anything we've got wrong so he doesn't have to mark anything, the lazy bastard.
SNE, I'll check my working....
m1spw said:
I really disagree with cheating I'm afraid.
I agree. Your punishment is to write a short poem about a horse.
Look, its not my fault, I keep getting bollocked for getting 70 and 80%'s. Apparently, my maths teacher wants us to do the work, check the answers in the back of the text book and then re do anything we've got wrong so he doesn't have to mark anything, the lazy bastard.
SNE, I'll check my working....
Do it yourself - we had too. It's called learning.
And hurry up with the horse poem....
m1spw said:
I can do most of my homework, but I'm stuck on this question:
Solve the following equation for 0 deg<#<360 deg , giving your answer to 1 decimal place:
4sin^2# = cos^2# [four sine squared theta equals cosine squared theta]
# = theta (symbol for an angle)
I think, using cos^2# = 1 - sin^2#, it becomes:
3sin^2# - 1 = 0
But this doesn't seem to give the answer. The answers should be 26.6, 206.6, 153.4, 333.4 degrees.
Any help would be great
>> Edited by m1spw on Monday 14th November 17:06
Sorry, was off that day...
Carrera2 said:
And hurry up with the horse poem....
Here ya go:
There once was a horse called Fred,
And he lived in a shed,
On the weekends he liked to race,
The rest of the time he needed some space
So his owner put him in a field,
Surrounded by a big fence shield,
I really cant be arsed to write any more,
So ill be heading for the door…
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