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Find the minimum and maximum value of 4t...

Find the minimum and maximum value of `4tan^(2)theta+9cos^(2)theta`.

A

8

B

6

C

13

D

12

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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-TRIGONOMETRY -EXERCISES (Multiple Choice Questions)
  1. The minimum value of 12sin^(2)theta+23cos^(2)theta is

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  2. Find the minimum value of (sintheta+cosectheta)^(2)+(costheta+sectheta...

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  3. Find the minimum and maximum value of 4tan^(2)theta+9cos^(2)theta.

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  4. Find the minimum and maximum value of 7cosalpha+24sinbeta.

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  5. Find the minimum and maximum value of 5sin^(2)theta+10cos^(2)theta+12s...

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  6. If A-B=(pi)/(4), then (1+tanA)(1-tanB)=?

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  7. If A+B=135^(@), then (1+cotA)(1+cotB)=?

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  8. If sectheta=x+(1)/(4x), then find the value of sectheta+tantheta.

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  9. If "cosec"theta=x+(1)/(4x), then find the value of "cosec"theta+cot t...

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  10. If tantheta+sintheta=m and tan theta-sin theta=n, then find the value ...

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  11. If cot theta+costheta=m and cot theta-costheta=n, then find the value ...

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  12. If tantheta+sintheta=mandtantheta-sintheta=n, then find the value of s...

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  13. If cosectheta-sintheta=landsectheta-costheta=m, then l^(2)m^(2)(l^(2)+...

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  14. If cosectheta-sintheta=mandsectheta-costheta=n, then (m^(2)n)^((2)/(3)...

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  15. If cottheta+tantheta=xand sectheta-costheta=y, then

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  16. If sintheta+sin^(2)theta+sin^(3)theta=1, then find the value of cos^(6...

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  17. (sin^(8)theta-cos^(8)theta)/(cos2theta(1+cos^(2)2theta))=?

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  18. If (secalpha+tanalpha)(secbeta+tanbeta)(secgamma+tangamma)=(secalpha-t...

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  19. If asectheta+btantheta+c=0andpsectheta+qtantheta+r=0, then (br-qc)^(2)...

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  20. If P=acos^(3)x+3acosx.sin^(2)xandQ=asin^(3)x+3acos^(2)x.sinx, then (P+...

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