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Help with Trigonometry?

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musicman

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Help with Trigonometry?
been stuck on a couple problems.. help would be greatly appreciated.

express (sinθ+cosθ)/cos θ in terms of tan θ

express sec θ - sin θ tan θ in terms of cos θ

Express (cos2) x (secx) in terms of cos x
 
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Help with Trigonometry?
I feel your pain.... I am starting my trig unit tonight :sick:
 
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Help with Trigonometry?
I'm taking it online.. so there is little help
 
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Help with Trigonometry?
doing it, already got number 1 but thanks
 
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Help with Trigonometry?
What class is this for?
 
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Help with Trigonometry?
Just break everything up into sines/cosines and simplify.

csc(θ) = 1/sin(θ)
sec(θ) = 1/cos(θ)
tan(θ) = sin(θ)/cos(θ)
cot(θ) = cos(θ)/sin(θ)
sin^2(θ) + cos^2(θ) = 1
 
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Heidy
Help with Trigonometry?
Jimmy said:
Just break everything up into sines/cosines and simplify.

csc(θ) = 1/sin(θ)
sec(θ) = 1/cos(θ)
tan(θ) = sin(θ)/cos(θ)
cot(θ) = cos(θ)/sin(θ)
sin^2(θ) + cos^2(θ) = 1
Click to expand...

also
sin^2(θ)-1=cos^2(θ)
cos^2(θ)-1=sin^2(θ)
 
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Help with Trigonometry?
There are some simple rules for all of these. 6 of them I believe? I suggest you memorize :)
 
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Help with Trigonometry?
I recently (yesterday) started trig. I was wondering which academic stream / grade level that problem stems from. I'm in Grade 10 Math, Academic (Highest stream possible, apart from University which comes into play Grade 11 w/ Advanced Functions).
 
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Help with Trigonometry?
Omg omg am i dreaming? I hate that! Good luck i hope that you will do better on the exams then me, 1 being the worst mark and 5 the max, i did 2, =( gl for you.
 
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Heidy
Help with Trigonometry?
ezkNYNE said:
I recently (yesterday) started trig. I was wondering which academic stream / grade level that problem stems from. I'm in Grade 10 Math, Academic (Highest stream possible, apart from University which comes into play Grade 11 w/ Advanced Functions).
Click to expand...

same with me, I'm in grade 10 but I started trig in grade 9.
 
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