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If the sides of DeltaABC are a = 4, b = ...

If the sides of `Delta`ABC are a = 4, b = 6 , c = 8 , then show that 4 cos B + 3 cos C = 2.

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SURA PUBLICATION-TRIGONOMETRY-EXERCISE 3.10
  1. Determine whether the following measurements produce one triangle, two...

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  2. If the sides of DeltaABC are a = 4, b = 6 , c = 8 , then show that 4 c...

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  3. In DeltaABC, if a = sqrt(3) - 1, b = sqrt(3) + 1 and angleC = 60^(@),...

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  4. In any DeltaABC, prove that the area Delta = (b^(2) + c^(2) - a^(2))/(...

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  5. In a DeltaABC, if a = 12 cm, b = 8 cm angleC = 30^(@), then show that ...

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  6. In a DeltaABC, if a = 18 cm, b = 24 cm and c = 30 cm. then show that i...

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  7. Two soldiers A and B in two different underground bunkers on a straigh...

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  8. A researcher wants to determine the width of a pond from east to west,...

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  9. Two Navy helicopters A and B are flying over the bay of Bengal at same...

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  10. A straight tunnel is to be made through a mountain. A surveyor observe...

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  16. Suppose that a satellite in space, an earth station and the centre of ...

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