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MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
- Find the value of : cos 210^@.
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- Find the value of : sin 225^@.
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- Find the value of : sin 765^@.
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- Find the value of : tan 330^@.
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- Find the value of : tan frac (19 pi)(3).
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- Find the value of : cot (-315^@).
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- Find the value of : cot ((-15 pi)/4) .
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- Find the value of : sec frac (11 pi)(4).
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- Find the value of : cosec (-1410^@).
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- Prove that: (cos 135^@ - cos120^@)/(cos 135^@ + cos120^@) =3-2 sqrt2 .
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- Prove that: sin 150^@ cos 120^@+ cos 330^@ sin 660^@= - 1.
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- Prove that : sin 105^@ + cos 105^@ = cos 45^@.
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- Simplify the following : sin(90^@+ theta) tan (270^@ +theta) cot (90^...
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- Simplify the following : (sin (- theta) tan(180^@ +theta) tan (90^@ +t...
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- Simplify the following : (cos (360^@-theta) cosec (180^@+ theta) cot (...
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- Prove that cos theta+ sin (270^@-theta)- sin (270^@-theta)+ cos (180^@...
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- Prove that : (cos(pi+theta)cos(-theta))/(sin (pi-theta) cos (pi/2+ the...
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- Prove that : sin^2 frac (pi)(6)+ cos^2 frac(pi)(3)- tan^2 frac(pi)(4)=...
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- Prove that: 2sin^2frac (pi)(6)+cosec^2frac (7pi)(6)cos^2frac (pi)(3)=3...
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- Prove that: cot^2frac (pi)(6)+cosecfrac (5pi)(6)+3tan^2frac (pi)(6)=6
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