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NAGEEN PRAKASHAN ENGLISH-TRIGNOMETRIC FUNCTIONS-EXERCISES 3H
- In DeltaABC,prove that: sin2A + sin2B-sin2C=4cosA cosB sinC
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- If A+B+C=pi, prove that : sinA+sinB+sinC= 4cos, A/2 cos, B/2 cos, C/2
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- In DeltaABC, prove that: a) (sin2A + sin2B + sin2C)/(sinA+sinB+sinC) ...
03:45
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- In a triangle ABCsin(B+2C)+sin(C+2A)+sin(A+2B)=4sin((B-C)/2)sin((C-A)/...
11:04
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- In DeltaABC, prove that: a) sin(A/2)+sin(B/2) +sin(C/2)=1+4sin((pi-A...
09:00
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- If A+B+C=pi/2, prove that: sin2A + sin2B+sin2C = 4cosA cosB cosC
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- Prove that: a) sin(A+B+C) + sin(A-B-C)+sin(A+B-C) + sin(A-B+C) = 4si...
11:29
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- If A+B+C=180, prove that: sinA+sinB+sinC=4cos(A/2)cos(B/2)cos(C/2...
06:32
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- If A+B+C=2S, prove that: sin(S-A)+sin(S-B)+sin(S-C)-sinS = 4sinA/2si...
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- If DeltaABC, prove that: a) sin^(2)A+sin^(2)B-sin^(2)C=2sinAsinBcosC...
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- If A+B+C=180^0, prove that : cos^2 (A/2) + cos^2 (B/2) - cos^2 (C/2) =...
09:51
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- If A+B+C=pi, then prove that tanA/2.tanB/2 +tanB/2.tanC/2 + tanC/2. ta...
03:06
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- In DeltaABC, prove that: cotBcotC+cotCcotA+cotAcotB=1
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- In DeltaABC, prove that: tan2A + tan2B+tan2C=tan2Atan2Btan2C
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- Prove that: (tan(alpha-beta)+tan(beta-lambda)+tan(lambda-alpha) = ta...
03:06
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- In DeltaABC, prove that: tanBtanC+tanCtanA+tanAtanB=1+secAsecBsecC
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- In DeltaABC, prove that: cotA+cotB+cotC = cotAcotBcotC+"cosec"A"cose...
05:26
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- If x+y+z=xyz, prove that: a) (3x-x^(3))/(1-3x^(2))+(3y-y^(3))/(1-3y^...
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