Home
Class 10
MATHS
Find the value of tan 2A if cos 3A = ...

Find the value of ` tan 2A ` if ` cos 3A = sin 45^o `.

Promotional Banner

Topper's Solved these Questions

  • TANGENTS AND SECANTS TO A CIRCLE

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|201 Videos

  • TRIGONOMETRY (MULTIPLE CHOICE QUESTION)

    VGS PUBLICATION-BRILLIANT|Exercise TRIGONOMETRY (MULTIPLE CHOICE QUESTION)|25 Videos

Similar Questions

Explore conceptually related problems

Find the value of 2 tan 30^@ + (cos 45^@)/ (2 cot 45^@)

In a right angle triangle ABC, right angle is at B ,If tan A=sqrt(3) , then find the value of (i) sin A cos C+ cos A sin C "

Find the value of tan 45^@ + cot 45 - sec 60^@

Find the value of 3 sin^2 45^@ + 2 cos^2 60^@ .

Find the value of (3 sin 45)/(2 tan 30) .

In a right angle triangle ABC, right angle is at B if tan A=sqrt3 then find the value of Sin A cos C + cos a sin c

Find the value of 2tan²45°+cos²30°-sin²60°

If tan theta = 1 then find the value of (5 sin theta + 4 cos theta)/(5 sin theta - 4 cos theta)

Find the value of (Tan^2 60 + 4Sin^2 45 + 3 Sec^2 30 + 10Cos^2 90)/(Cosec^2 60 + Cos 60 - Cot^2 60)

VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. If cos O/ = 1/(sqrt2) , then find the value of 4 + cot O/ .

    Text Solution

    |

  2. Is it correct to say that sin O/ = cos (90 - O/)? why?

    Text Solution

    |

  3. Find the value of tan 2A if cos 3A = sin 45^o .

    Text Solution

    |

  4. In a right triangle ABC, right angled at C in which AB = 13cm, BC = 5c...

    Text Solution

    |

  5. cosec 39^(0), sec 51^(0) - tan 51^(0). Cot 39^(0) విలువను గుణించండి.

    Text Solution

    |

  6. Ravi says “the value of tan 0^o tan 1^o tan 2^o……. tan 89^o is zero’...

    Text Solution

    |

  7. Prove that 4tan^2 45^o - cosec ^2 30^o + cos^2 30^o = 3/4

    Text Solution

    |

  8. Using the figure given of triangle ABC prove that sin^2 O/ + cos^2 O/...

    Text Solution

    |

  9. Show that sqrt (sec^2 O/ + cosec^2 O/) = tan O/ + cot O/

    Text Solution

    |

  10. Prove that sqrt ((1 - sin O/)/(1 + sin O/ )) = sec O/ - tan O/

    Text Solution

    |

  11. If sin (A-B) =(1)/(2) ,cos (A+B) =(1)/(2) ,where 0^@ lt A +B lt 90 ^(...

    Text Solution

    |

  12. If x = a sec O/ and y = b tan O/ then prove that x^2/a^2 - y^2/b^2...

    Text Solution

    |

  13. Prove that sqrt((cosec A + 1)/(cosec A - 1)) - sqrt((cosec A - 1)/(co...

    Text Solution

    |

  14. If A, B, C are interior angle of triangle ABC then show that sin ((...

    Text Solution

    |

  15. What can you say about the values of sin A and cos A as the measure of...

    Text Solution

    |

  16. Find measure of the angle A and B, if cos ( A - B ) = sqrt3/2 and sin ...

    Text Solution

    |

  17. tan^(2) 60^(0) + cot^(2) 30^(0) //sin^(2) 30^(0) + cos^(2) 60^(0) విలు...

    Text Solution

    |

  18. Prove that 1/sin^2 O/ - cot^2 O/ = 1

    Text Solution

    |

  19. If cosec (A+B) =1 and cot (A-B) = sqrt3, 0^o < A+B < 90^o, A>B then ...

    Text Solution

    |

  20. Find the value of (sec 15^o/(cosec 75^o)) + (sin 72^o/cos 18^o) - (ta...

    Text Solution

    |