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A lamp post is situated at the middle po...

A lamp post is situated at the middle point M of the side AC of a triangular plot of ABC with `B C=7m ,\ C A=8\ a n d\ A B=9mdot` Lamp post subtends an angle of `15^0` at the point B. determine the height of the lamp post.

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RD SHARMA ENGLISH-SINE AND COSINE FORMULAE AND THEIR APPLICATIONS-All Questions
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  2. Two ships leave port at the same time. One goes 24 km per hour in the ...

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  6. In a DeltaA B C , prove the following :\ If\ a=sqrt(2),\ b=sqrt(3)\ a...

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  7. In a DeltaA B C , prove the following : The sides of a triangle area ...

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  9. In a DeltaA B C , prove the following : c\ (acosB-bcosA)=a^2-b^2dot

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  12. In a Delta A B C , prove the following : \ a(cos B+cos C-1)+b(cos C+c...

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  13. In a DeltaA B C , prove the following : a\ cos A+b\ cos B+c cos C=2bs...

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  14. In a Delta A B C , prove the following : a^2=(b+c)^2-4bc cos^2(A/2)dot

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  15. In a DeltaA B C , prove the following : 4\ (b c cos^2(A/2)+c acos^2(B...

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  16. In a DeltaA B C ,\ prove that , sin^3Acos(B-C)+sin^3B cos(C-A)+sin^...

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  17. In any DeltaA B C ,(b+c)/(12)=(c+a)/(13)=(a+b)/(15),\ then prove tha...

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  18. If in a Delta A B C ,cos^2A+cos^2B+cos^2C=1, prove that the triangle ...

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  19. Two ships leave a port at the same time. One goes 24 km/hr in the d...

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  20. Find the area of the triangle DeltaA B C in which a=1,\ b=2\ a n d\ /...

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