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SIA PUBLICATION-TRIGONOMETRIC RATIOS -PROBLEMS
- sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =
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- "cosec" 15^(@) + sec 15^(@) =
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- If 5 cos x+ 12 cosy=13 , then the maximum value of 5sin x+ 12 sin y i...
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- If x = tan 15^(@), y = cosec 75^(@)and z =4 sin 18^(@) then,
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- If cos theta - 4 sin theta -1 , then sin theta + 4 cos theta i is equ...
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- If (tan 3A)/(tan A) =a then (sin 3A)/(sin A) is equal to
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- A+C=2B implies ( cos C - cos A )/( sin A - sin C )=
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- If A +B =C then cos ^(2) A+cos ^(2)B + cos^(2)C -2 cos A cos b cos C i...
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- tan 9^(@) - tan 27^(@) - tan 63^(@) + tan 81^(@) =
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- In Delta ABC, cos""((B+2C+3A)/(2))+ cos""((A-B)/(2))=
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- The value of the series cos 12 ^(@) + cos 84^(@) + cos 132^(@)+cos 1...
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- For x in R , 3 cos (4x-5) +4 lies in the interval
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- cos alpha sin (beta - gamma) + cos beta sin (gamma - alpha ) + cos gam...
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- The value of cos "" (2pi)/(15) cos "" (4pi)/(15) cos "" (8pi)/(15) cos...
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- If A+B+C=270^(@) then cos 2A + cos 2B+ cos 2C is equal to
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- If sin 6theta =32 cos ^(5) theta sin theta-32 cos ^(3) theta sin theta...
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- If cos (alpha + beta) = 4/5, sin (alpha -beta) = 5/13 and alpha, beta ...
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- cos ^(2) 76^(@)+cos ^(2) 16^(@) is equal to
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- sum (k =1) ^(3) cos ^(2) (2k -1) pi/12 is equal to
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- (sin 5 theta)/(sin theta) is equal to
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