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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
- Period of sin^2theta is- pi^2 b. pi/2 c. 2pi d. pi
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- If y=sec^2theta+cos^2theta,\ theta!=0, then- y=0 b. ylt=2 c. ygeq-2 d....
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- The value of (1-tan^2 15^0)/(1+tan^2 15^0)= 1 b. sqrt(3) c. (sqrt(3))...
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- If alpha is a root of 25 cos^2theta+5costheta-12=0,pi/2<alpha<pi, , th...
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- If sin(alpha + beta) = 1, sin(alpha - beta) = 1/2 then tan(alpha + 2 b...
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- If t a ntheta=\ -4/3 then s intheta is- -4/5\ b u t\ not4/5 b. -4/5or4...
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- sec^2theta=(4x y)/((x+y)^2) is true if and only if x+y!=0 (b) x=y ,x!...
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- If u=a^2cos^2theta+b^2sin^2theta+a^2sin^2theta+b^2cos^2theta then the ...
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- piltalpha-betalt3pi,sinalpha+sinbeta=-21/65,cosalpha+cosbeta="-27/65,t...
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- If 0ltxltpi and cosx + sinx =1/2 , then tanx is (1) ...
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- Let cos(alpha+beta)""=4/5 and let s in(alphabeta)""=5/(13) where 0lt=a...
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- If A""=""s in^2x""+""cos^4x , then for all real x : (1) 3/4lt=Alt=1...
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- In a DeltaPQR. if 3 sinP +4 cosQ=6 and 4sinQ+3cosP=1, then the angle R...
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- The expression (t a n A)/(1-cot A)+(cot A)/(1-t a n A) can be written ...
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- Let fK(x)""=1/k(s in^k x+cos^k x) where x in R and kgeq1 . Then f4(x)...
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- If m and M are the minimum and the maximum values of 4+1/2 sin^2 2x-2c...
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- If A >0,\ B >0\ a n d\ A+B=\ pi/6 , then the minimum value of t a n A+...
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- Given both thetaa n dvarphi are acute angles and sinalphabetagamma=1/2...
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- In an equilateral triangle 3 coins of radii 1 unit each are kept so...
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- t1 = (sintheta)^costheta ,t2 = (sintheta)^sintheta , t3 = (costheta)^c...
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