Question and Answers Forum
TrigonometryQuestion and Answers: Page 3
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Question and Answers Forum |
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TrigonometryQuestion and Answers: Page 3 |
| In triangle ABC, ∠C = 60°. If the length of opposite sides of ∠A, ∠B and ∠C are a, b and c respectively then prove that (1/(a + c)) + (1/(b + c)) = (3/(a + b + c)) . |
| Prove that, in a triangle the ratios of the sides and the sine of the opposite angles are equal. Also prove that each ratio is equal to the diameter of the circum circle of the triangle. |
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| △ABC. cos C=((sin A + cos A)/2)=((sin B + cos B)/2). Find cos C. |
| Evaluer: (R/(r1+r2)) |
| Prove , in AB^Δ C : ((cosA)/(sin^2 A)) + ((cosB)/(sin^2 B)) +((cosC)/(sin^2 C)) ≥ (r/R) r : incircle radius R: circumcircle radius |
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| sin (θ+φ)=θ sin θ=φ find θ and φ. |
| valeur de : tan^2 ((π/7))+tan^2 (((2π)/7))+tan^2 (((3π)/7)) = ??? |
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| Determiner Aire (ABH) AH⊥CE |
| Find the maximum value of 7cosA + 24sinA + 32 |
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| If sin x + cos x + tan x + cot x + sec x + csc x = 7 , find sin2x? |
| A ramp is supported by six pillars and the talleste on measures 6 meters. The distance between eachi pllar is 5 meters. What will be the height of the third pillar? |
| ((1+sin 40°−cos 40°)/(1+sin 40°+cos 40°)) =? |
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| In the triangle ABC ; cos(B−C)=(1/3) Show that : ((1−3cos(B+C))/(6sinBcosC))=tanC |
| Is there any n∈N such that sin(n)∈Q ? |
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