write trignomentric basic rules.
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consider in a right angles triangle
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Trigonometric basic rules:
Firstly every sign we should use A or theta,alpha,gama,beta,phy,omega etc for the angel. Like : sinA, cosA
→sine = opposite side/hypotenuse
> The opposite of is cosecant = hypotenuse/opposite side.
=> sinA = 1/cosecA
→cosine = adjacent side/hypotenuse
>The opposite of cosine is secant = hypotenuse/adjacent side
=> cosA = 1/secA
→ tangent = opposite side/adjacent side
>The opposite of tangent is cotangent= adjacent side/opposite side
=> tanA = 1/cotA
* There are many relations between them.They are :
→ tanA = sinA/cosA
→cotA = cosA/sinA
>sin²A+cos²A=1
>sec²A-tan²A=1
>cosec²A-cot²A = 1
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Hope it will help you,friend. :)