# C2 solve questionWatch

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#1
Hi how would you solve (1-tanx)(2 sinx+1) so that you can get rid of the tan X? Thanks
0
3 years ago
#2
(Original post by Farmerjj)
Hi how would you solve (1-tanx)(2 sinx+1) so that you can get rid of the tan X? Thanks
That is not an equation so it can't be solved.

Please rewrite it with an '=' sign.
0
#3
(Original post by notnek)
That is not an equation so it can't be solved.

Please rewrite it with an '=' sign.
Sorry, (1-tanx)(2 sinx+1)=0
0
3 years ago
#4
(Original post by Farmerjj)
Sorry, (1-tanx)(2 sinx+1)=0
I don't know what you mean by get rid. But when you have , a or b or both a and b are 0.
0
3 years ago
#5
(Original post by Farmerjj)
Hi how would you solve (1-tanx)(2 sinx+1) so that you can get rid of the tan X? Thanks
If the question is asking you to solve, im guessing you can make each bracket equal to 0. The same way you'd solve (x-3)(x+2), then use the cast diagram or whatever method you use to find all the values of x.
0
3 years ago
#6
(Original post by Farmerjj)
Hi how would you solve (1-tanx)(2 sinx+1) so that you can get rid of the tan X? Thanks
If you want to "get rid" of the tan x, you can apply the rule, (sin theta)/(cos theta) = (tan theta). So you can replace tanx with sinx/cosx.
0
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