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If tan A=3,then which of the followings ...

If tan A=3,then which of the followings is the value of tan2A?

A

a)-3/4

B

b)-4/3

C

c)3/4

D

d)4/3

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UNITED BOOK HOUSE-TIRTHAPATI INSTITUTION -EXERCISE
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  2. Find the value of discrimimant of the quadratic equation x^2+2x+2=0

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  3. If tan A=3,then which of the followings is the value of tan2A?

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  4. If A={x:x in R,-32lexle10},B={x:x in R,0lexle12}then find A-B.

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  5. If A={x:x in R,-32lexle10},B={x:x in R,0lexle12}then find A-B.

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  6. Determine the modulus-amplitude form of the comples number (sqrt3+i)

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  7. If the sum of the two roots of the quadratic equation x^2-px+q=0be the...

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  8. State the principle of mathematical induction.

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  12. IF 2 costheta=x+1/xthen show that 2 cos3 theta=x^3+1/x^3

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  16. By the principle of mathematical induction prove that (5^(2n)-1)is alw...

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  20. If sinx-siny=a and cosx+cosy=b,prove that tan((x+y)/2)=+-sqrt((4-a^2-b...

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