Question

tan (a plus b/2) equal cot c/2

Answer 1

♧♧HERE IS YOUR ANSWER♧♧



Trigonometry is the study of angles and its ratios. This study prescribes the relation amongst the sides of a triangle and angles of the triangle.



There are sine, cosine, tangent, cot, sectant and cosec ratios to an angle of a triangle.



Let me tell you an interesting fact about Trigonometry.



"Triangle" > "Trigonometry"



Remember some formulae now :



sin²θ + cos²θ = 1



sec²θ - tan²θ = 1



cosec²θ - cot²θ = 1



Want to learn more!



Here it is :



sin(A + B) = sinA cosB + cosA sinB



sin(A - B) = sinA cosB - cosA sinB



cos(A + B) = cosA cosB - sinA sinB



cos(A - B) = cosA cosB + sinA sinB



(SEE THE ATTACHMENT)



♧♧HOPE THIS HELPS YOU♧♧