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SURA PUBLICATION-TRIGONOMETRY-EXERCISE 3.9
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- In a triangleABC, prove that a cos A+b cos B+c cos C=2a sin B sin C
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- In a DeltaABC, angleA = 60^(@), prove that b + c = 2a cos ((B - C)/(2)...
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- In a DeltaABC, prove that a sin ((A)/(2) + B) = (b + c) sin ""(A)/(2...
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- In a DeltaABC, prove that a ( cos B + cos C) = 2 (b + c) sin^(2)""(A...
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- In a DeltaABC, prove that (a^(2) - c^(2))/(b^(2)) = (sin (A - C))/(s...
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- In a DeltaABC, prove that (a sin(B - C))/(b^(2) - c^(2)) = (b sin (C...
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- In a DeltaABC, prove that (a + b)/(a - b) = tan ((A + B)/(2)) cot ((...
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- In DeltaABC, prove that (a^(2) - b^(2) + c^(2)) tan B = (a^(2) + b^(2)...
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- An Engineer has to develop a triangular shaped park with a perimeter ...
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- A rope of length 12 m is given. Find the largest area of the triangle ...
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- Derive projection formula from Law of sines
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- Derive projection formula from Law of cosines
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