# A2 trig question

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#1
Can someone guide me what to do next below please?
I can't find a way of simplifying it

Last edited by Rhys_M; 4 weeks ago
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4 weeks ago
#2
Dividing by cos() usually helps.
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#3
(Original post by mqb2766)
Dividing by cos() usually helps.
How do you do that? I take you cant judge knock out cosx and cosy from the top and bottom due to separate terms, as that'd give (sinxsiny)/(sinx + siny)
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4 weeks ago
#4
You have a fraction with cos()*sin(), sin()*sin() and cos()*cos() terms on both the numerator and denominator. Think what identity transformation you can do to the fraction. Dividing sin() by cos() gives you tan(), so think along those lines.
Last edited by mqb2766; 4 weeks ago
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#5
(Original post by mqb2766)
You have a fraction with cos()*sin(), sin()*sin() and cos()*cos() terms on both the numerator and denominator. Think what identity transformation you can do to the fraction. Dividing sin() by cos() gives you tan(), so think along those lines.
Oh **** I just realised what i was doing - this really isn't hard lol sorry and thanks for your help
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