, hence the identity is verified.
![[cot(x)=\frac{cos(x)}{sin(x)}]](/tpl/images/0379/2990/69b4a.png)
and ![[cot(y)=\frac{cos(y)}{sin(y)}]](/tpl/images/0379/2990/f246b.png)
![[cos(x-y)=cos(x)cos(y)-sin(x)sin(y)][sin(x+y)=sin(x)cos(y)+sin(y)cos(x)]](/tpl/images/0379/2990/15aba.png)
Trigonometry - verify identity:
cos (x - y) / sin (x + y) = 1 + cotxcoty / cotx + coty...
Mathematics, 18.11.2019 09:31 helpplz84
Trigonometry - verify identity:
cos (x - y) / sin (x + y) = 1 + cotxcoty / cotx + coty
Answers: 3
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