#Trigonometry all formulas

Integral of 1/(1 + cos x) dx

If ` DeltaABC` right angle at B, BC = 5 cm and AC -AB =1 cm. then ` (1 + sin C)/(cos C)` is equal

Prove that cosA + cosB + cosC = -1 + 4cosA/2 cosB/2 sinC/2 | EDUTAINMENT ONLINE

Trigonometry Class 11 | CosA + CosB - CosC = -1 + 4 Cos(A/2) Cos(B/2) Sin(C/2)

In △ABC, right angled at B, AB=24cm, BC=7cm. Find (i)sinA, cosA (ii) sinC, cosC | NCERT Ex 8.1 Q1

In triangle ABC, angle B = 90, BC = 5 cm and AC-AB = 1, Evaluate : 1+sinC/1+cosC.

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prove that cosA+cosB-cosC=-1+4cosA/2cosB/2sinC/2

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Prove that c^2=a^2+b^2-2abcosC. Hence deduce that 1+ cosC = (a+b+c)(a+b-c)/(2ab)

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If `A,B` and `C` are angles of a triangle then the determinant `|(-1,cosC,cosB),(cosC,-1,cosA),

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cosA.sinB.sinC+sinA.cosB.sinC+sinA.sinB.cosC = 1+cosA.cosB.cosC || Step by Step proof|| Trigonometry

In DeltaABC, Prove that: cosA+cosB+cosC=1+4sinA/2sinB/2sinC/2 | 12 | TRIGNOMETRIC FUNCTIONS | M...

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In any triangle `A B C` , prove that: `(1+cos(A-B)cos C)/(1+cos(A-C)cos B)=(a^2+b^2)/(a^2+c^2)`

Trigonometry Class 11 | CosA + CosB + CosC = 1 + 4 Sin(A/2) Sin(B/2) Sin(C/2)

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