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If in Delta ABC, the altitudes from the ...

If in `Delta ABC,` the altitudes from the vertices A, B and C on opposite sides are in HP, then sin A sin B and sin C are in

A

A.P.

B

G.P.

C

H.P.

D

A -G Progression.

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MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
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  3. If in Delta ABC, the altitudes from the vertices A, B and C on opposit...

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  4. if cos(alpha-beta)=1a n dcos(alpha+beta)=l/e , where alpha,betamu in [...

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  10. If (sin^(4)x)/(2)+(cos^(4)x)/(3)=1/5, then

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