# maths help

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Thread starter 1 month ago
#1
given that sin x cos y =3 cos x sin y express tan x in terms of tan y
Last edited by blankasap; 1 month ago
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1 month ago
#2
(Original post by blankasap)
given that sin x cos y =3 cos x sin y express tan x in terms of tan y
Hint: tan(u) = sin(u) / cos(u). Try rearranging the given expression with that in mind.
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1 month ago
#3
What is the relationship between tan, sin and cos?
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Thread starter 1 month ago
#4
(Original post by T!gger34)
What is the relationship between tan, sin and cos?
tan theta = sin theta divide by cos theta, im stuck on how the markscheme shows sin x cos y / cos x cos y= 3 cos x sin y /cos x cos y
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1 month ago
#5
(Original post by blankasap)
tan theta = sin theta divide by cos theta, im stuck on how the markscheme shows sin x cos y / cos x cos y= 3 cos x sin y /cos x cos y
Ignore the mark scheme and try the question with the hints.
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1 month ago
#6
Cancel terms. Identical terms just gives 1 and remember the tan x = sin x/cos x relationship.
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Thread starter 1 month ago
#7
(Original post by Muttley79)
Ignore the mark scheme and try the question with the hints.
thank you idk why the mark scheme complicated it
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1 month ago
#8
(Original post by blankasap)
thank you idk why the mark scheme complicated it
I tell my students NOT to look at markschemes but just keep trying - often struggling with a question and then solving it is so much better for your progress.
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