cos alpha * sin (beta - gamma ) + cos be...

`cos alpha * sin (beta - gamma ) + cos beta * sin ( gamma - alpha ) + cos gamma * sin ( alpha - beta )= `

`0`

`1//2`

`1`

`4 cos alpha cosbeta cos gamma `

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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 B ( COMPOUNDS ANGLES )

sum(sin (A+B) sin (A-B))/(sin^(2)A sin^(2)B)=
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Evaluate sum(sin (A+B)sin(A-B))/(cos^(2)A cos^(2)B): if non of cos A ,...
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cos alpha * sin (beta - gamma ) + cos beta * sin ( gamma - alpha ) + c...
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Find tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@)tan40^(@).
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tan 75^(@) - tan 30^@ - tan 75^(@) * tan 30^*(@) =
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The value of (tan 80^@ - tan 10^(@))/( tan 70^(@))
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If tan 69^(@) + tan 66^@ - tan 69^(@) tan66^@=2k , then the value of ...
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tan A cot (A//2)-1=
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tan 5x- tan 3x - tan 2x =
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cos^(2) (A-B)+cos^(2)B-2cos(A-B) cos A cos B =
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Prove that sin^(2)alpha + cos^(2) (alpha + beta) + 2 sin alpha sin bet...
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(cos 15^(@) + sin 15^(@))/(cos 15^(@) - sin 15^(@)) =
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(tan (45^(@) + alpha ) + tan ( 45^(@) - alpha ))/( cot (45^(@) + alpha...
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(tan 23^(@) + tan 22^(@))/(1- tan23^(@) * tan 22^(@))=
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If (1- tan2^(@) cot 62^(@))/( tan 152^(@) - cot88^(@))=ksqrt(3) , then...
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((1+ tan 32^@)(1+tan 13^(@)))/((1+tan23^(@))(1+tan22^(@)))=
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The value of (tan 80^@ - tan 10^(@))/( tan 70^(@))
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(tan alpha + tan beta )/( tan (alpha + beta ))+(tan alpha - tan beta )...
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If sin ( theta + alpha ) = cos ( theta + alpha ), then tan theta =
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If tan(A+B)=m , tan (A-B)=n, " then " tan 2A=
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