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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
- If A , B and C are interior angles of triangle ABC ,then show that sin...
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- Evaluate (tan 36^(@) )/( cot 54^(@))
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- cos 12^(0)- sin 78^(0) =
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- Evaluate cosec 31^(@) -sec 59^(@)
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- Evaluate sin 15^@.sec 75^@.
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- Evaluate tan 26^(@) tan 64^(@)
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- Show that tan 48^(@) tan 16^(@) tan42^(@) tan 74^(@) =1
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- Show that cos 36^(@) cos 54 ^(@) -sin 36^(@) sin 54^(@) =0
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- If tan 2A =cot (A-18^(@) ) where 2A is an acute angle , Find the val...
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- If tan A =cot B where A and B are acute angles prove that A+B= 90 ^(@...
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- If A , B and C are interior angles of a triangle ABC, then show that t...
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- Expression sin75^(@) +cos 65^(@) in terms of trigonometric ratios of ...
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- For which value of an acute angle theta ,(i) ( cos theta )/( 1-sin th...
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- Are these identities true only for 0^(@) le A le 90 ^(@) ? If not ,fo...
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- Are these identities true only for 0^(@) le A le 90 ^(@) ? If not ,fo...
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- If sin C =( 15)/(17) , then find cos C ,
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- If tan x = ( 5)/( 12), then find sec x.
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- If cosec theta =(25)/( 7), then find cot theta
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- Evaluate the following and justify your answer. (i) (sin ^(2) 15^(...
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- Find sin 5^(@) cos 85^(@) +cos 5^(@) sin 85^(@)
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