trigonometry - $\tan(x)=\cot(90^\circ-x)$?? - Mathematics Stack
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I was looking at a mark scheme for a question I was stuck on, and I came across this. You are asked to work out the value of $\tan 75^\circ$ after you've worked out $\cos 15^\circ$ and $\sin 15^\ci
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maths-class-x-question-bank(1)(1) - Flipbook by jaspreetkler127
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cot(90 + x), cot(90 + A), cot(90 + theta), Identity for cot(90 + x)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Trigonometric_functions.svg/300px-Trigonometric_functions.svg.png)
Trigonometric functions - Wikipedia
![](https://media.geeksforgeeks.org/wp-content/uploads/20240312184808/Trigonometric-Formulas.webp)
Trigonometry Formulas and Identities - List of All Trigonometric Formulas
![](https://shadhickmantrigonometry.weebly.com/uploads/3/0/7/0/30709179/4911234_orig.jpg)
cot(90-x)=tan(x) - Trigonometry
2021 M11 Wk01 WS Trigonometry 1 (Student) - 1616068594287 - Mpw3o, PDF, Trigonometric Functions
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Find the ratios for tan 90°, cosec 90°, sec 90° and cot 90°.
![](https://useruploads.socratic.org/icT7ajMkQnm5hDAGhOn3_UnitCircle.jpg)
How do you find the value of cot 90?
![](https://dokumen.pub/img/calculus-of-a-single-variable-4nbsped-0669245917-9780669245912.jpg)
Calculus of a Single Variable [4 ed.] 0669245917, 9780669245912
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![](https://image.slidesharecdn.com/trignotes-111227230751-phpapp02/85/trignometry-notes-notes-2-320.jpg?cb=1667985395)
Trignometry notes notes
![](https://img.yumpu.com/18556305/1/500x640/calculus.jpg)
Calculus
Trigonometrical Ratios Table, Trigonometric Standard Angles
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