Home
Class 10
MATHS
Find the vlaue of (2tan30^(@))/(1-tan^(2...

Find the vlaue of `(2tan30^(@))/(1-tan^(2) 30^(@))`.

Text Solution

AI Generated Solution

The correct Answer is:
To find the value of \(\frac{2 \tan 30^\circ}{1 - \tan^2 30^\circ}\), we can follow these steps: ### Step 1: Identify the value of \(\tan 30^\circ\) We know that: \[ \tan 30^\circ = \frac{1}{\sqrt{3}} \] ### Step 2: Substitute \(\tan 30^\circ\) into the expression Now, substitute \(\tan 30^\circ\) into the expression: \[ \frac{2 \tan 30^\circ}{1 - \tan^2 30^\circ} = \frac{2 \cdot \frac{1}{\sqrt{3}}}{1 - \left(\frac{1}{\sqrt{3}}\right)^2} \] ### Step 3: Simplify the denominator Calculate \(\tan^2 30^\circ\): \[ \tan^2 30^\circ = \left(\frac{1}{\sqrt{3}}\right)^2 = \frac{1}{3} \] Now substitute this back into the expression: \[ \frac{2 \cdot \frac{1}{\sqrt{3}}}{1 - \frac{1}{3}} = \frac{2 \cdot \frac{1}{\sqrt{3}}}{\frac{2}{3}} \] ### Step 4: Simplify the fraction Now we simplify the expression: \[ \frac{2 \cdot \frac{1}{\sqrt{3}}}{\frac{2}{3}} = \frac{2}{\sqrt{3}} \cdot \frac{3}{2} \] The \(2\) in the numerator and denominator cancels out: \[ = \frac{3}{\sqrt{3}} \] ### Step 5: Further simplify the expression Now simplify \(\frac{3}{\sqrt{3}}\): \[ \frac{3}{\sqrt{3}} = \sqrt{3} \] ### Final Answer Thus, the value of \(\frac{2 \tan 30^\circ}{1 - \tan^2 30^\circ}\) is: \[ \sqrt{3} \] ---
Promotional Banner

Topper's Solved these Questions

  • INTRODUCTION TO TRIGONOMETRY

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 8 C|50 Videos
  • INTRODUCTION TO TRIGONOMETRY

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 8 D|6 Videos
  • INTRODUCTION TO TRIGONOMETRY

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 8a|20 Videos
  • CONSTRUCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 11 B|10 Videos
  • LINEAR EQUATIONS IN TWO VARIABLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Questions|8 Videos

Similar Questions

Explore conceptually related problems

Find the value of: tan(-30^(@))

Find the value of : cosec^(2)60^(@)-tan^(2)30^(@)

Find the value of : cosec^(2)60^(@)-tan^(2)30^(@)

Find the value of : tan30^(@)tan60^(@)

Find the value of : tan30^(@)tan60^(@)

Find the vlaue of 4sin^(2)30^(@)+tan^(2)60^(@)+sec^(2)45^(@) .

solve : (2tan30^@)/(1+tan^2 30^@)

Find the value of : tan^(2)30^(@)+tan^(2)45^(@)+tan^(2)60^(@)

Find the value of tan22^(@)30^(') .

Find the value of : 3sin^(2)30^(@)+2tan^(2)60^(@)-5cos^(2)45^(@)

NAGEEN PRAKASHAN ENGLISH-INTRODUCTION TO TRIGONOMETRY-Exercise 8 B
  1. Find the value of sin60^(@)cos30^(@)+cos60^(@)sin30^(@).

    Text Solution

    |

  2. Find the vlaue of (2tan30^(@))/(1-tan^(2) 30^(@)).

    Text Solution

    |

  3. Find the value of 2sin30^(@)cos30^(@).

    Text Solution

    |

  4. Show that : 2tan^(2)60^(@)-6(sin^(2)45^(@)-tan^(2)30^(@))=5

    Text Solution

    |

  5. Find the vlaue of 4sin^(2)30^(@)+tan^(2)60^(@)+sec^(2)45^(@).

    Text Solution

    |

  6. Find the value of (sin30^(@))/(cos^(2)45^(@))-tan^(2)60^(@)+3cos90^(@)...

    Text Solution

    |

  7. Evaluate : (sin^(2)30^(@)+sin^(2)45^(@)-4cot^(2)60^(@))/(2sin30^(@)cos...

    Text Solution

    |

  8. (2tan3 0^(@))/(1-tan^2 3 0^(@))

    Text Solution

    |

  9. Show that : cos^(2)60^(@)-sin^(2)60^(@)=-sin30^(@)

    Text Solution

    |

  10. (2tan3 0^(@))/(1-tan^2 3 0^(@))

    Text Solution

    |

  11. Show that : cos30^(@)=sqrt((1+cos60^(@))/(2))

    Text Solution

    |

  12. Evaluate : (tan45^(@))/(2sin30^(@)-cos60^(@))

    Text Solution

    |

  13. If A=30^@ verify that cos3A=4cos^3A-3cosA

    Text Solution

    |

  14. If A =45^(@),then show that : cos 2A=cos^(2)A-sin^(2)A

    Text Solution

    |

  15. Given A=60^(@) and B=30^(@), prove that : cos(A+B)=cosAcosB-sinAsinB

    Text Solution

    |

  16. If A =30^(@),then show that : tan2A=(2tanA)/(1-tan^(2)A)

    Text Solution

    |

  17. If tanA=1,then find the value of sin^(2)A+cos^(2)A+cotA.

    Text Solution

    |

  18. If costheta=(sqrt(3))/(3), then find the value of sin3theta.

    Text Solution

    |

  19. If tan(A+B)=sqrt(3)andsin(A-B)=(1)/(2),then find the value of tan (2A-...

    Text Solution

    |

  20. If cos(A+B)=0andsin(A-B)=(sqrt(3))/(2)then find the value of tan(A-3B)...

    Text Solution

    |