Find ##\tan \theta ## in the form of ##a+b\sqrt {2}##

AI Thread Summary
The discussion centers around identifying an error in a mark scheme (ms) related to finding ##\tan \theta## in the form of ##a+b\sqrt{2}##. Participants agree that there is indeed a mistake and suggest that simplifying the denominator by grouping the radicals could clarify the issue. One user expresses concern about the reliability of the mark scheme, given its source from an international curriculum paper. The abbreviation "ms" is clarified as referring to "mark scheme." Overall, the conversation emphasizes the importance of verifying calculations in trigonometric problems.
chwala
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Homework Statement
see attached.
Relevant Equations
Trigonometry - Add Maths
There is an error on ms ...unless i am missing something.

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1715481969500.png
 
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chwala said:
Homework Statement: see attached.
Relevant Equations: Trigonometry - Add Maths

There is an error on ms ...unless i am missing something.

View attachment 345058

View attachment 345059
Yes. There is an error.
 
Showing the intermediate step where you group the radicals and simplify the denominator may help reveal the mistake.
 
scottdave said:
Showing the intermediate step where you group the radicals and simplify the denominator may help reveal the mistake.
I saw the mistake ... just wanted to counter-check myself... Cheers man!

This is a question from an international curriculum paper and its highly unlikely for mistakes to be on ms ...
 
Last edited:
chwala said:
I saw the mistake ... just wanted to counter-check myself... Cheers man!

This is a question from an international curriculum paper and its highly unlikely for mistakes to be on ms ...
What does ms stand for?
 
scottdave said:
What does ms stand for?
It's chwala's abbreviation for "mark scheme."
 

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