Home
Class 12
MATHS
If sin 2A = 2 sin A, then A is equal to...

If sin 2A = 2 sin A, then A is equal to

A

`0^(@)`

B

`30^(@)`

C

45

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SIMPLE INTEREST AND COMPOUND INTEREST

    ARIHANT PUBLICATION JHARKHAND|Exercise Exam Booster for Cracking Exam |25 Videos

  • SOLVED PAPER 2019

    ARIHANT PUBLICATION JHARKHAND|Exercise SECTION I: MATHEMATICS|48 Videos

Similar Questions

Explore conceptually related problems

Sin 2A= 2 sin A is true when A equals to

If sin2B=2sin B then angle B equal to

If A, B, C are the angles of a triangle, then sin 2A + sin 2B - sin 2C is equal to

If the area of DeltaABC be lamda , then a^(2) sin 2B + b^(2) sin 2A is equal t,o

Sin A + 2sin 2A + sin3A is equal to which of the following? 1. 4sin 2A cos^2(A/2) 2. 2 sin 2A (sinA/2+cosA/2)^2 3. 8 sin A cos A cos^2(A/2) Select the correct answer using the codes given below:

If Delta denotes the area of DeltaABC , then b^(2) sin 2C + c^(2) sin 2B is equal to

ARIHANT PUBLICATION JHARKHAND-SOLVED PAPER 2018 -SECTION I : MATHEMATICS
  1. (sec A+ tan A) (1 - sin A) equals to

    Text Solution

    |

  2. The value of sin^(2) 63^(@) + sin^(2) 27^(@) is

    Text Solution

    |

  3. If sin 2A = 2 sin A, then A is equal to

    Text Solution

    |

  4. If cot theta=7/8 then find the value ((1-sin theta)(1+sin theta))/((1-...

    Text Solution

    |

  5. Sum of first 15 multiples of 8 is

    Text Solution

    |

  6. A sum of ₹ 700 is to be used to give give cash prizes to students of a...

    Text Solution

    |

  7. The number of 3-digit numbers divisible by 7 is

    Text Solution

    |

  8. Find the 20^(t h)term from the last term of the AP : 3, 8, 13, . . , ...

    Text Solution

    |

  9. Find two consecutive odd positive integers, sum of whose squares is 29...

    Text Solution

    |

  10. The value of k, so that the following system of equations 3x – y + 5 =...

    Text Solution

    |

  11. The value of lambda for which the lines 3x+4y=5,5x+4y=4\ a n d\ lambda...

    Text Solution

    |

  12. Which of the following cannot be the difference between a two-digit nu...

    Text Solution

    |

  13. If DeltaABC is right angled at C, then the value of cos(A+B) is

    Text Solution

    |

  14. If sec theta + tan theta =p, then tan theta is equal to

    Text Solution

    |

  15. If sin theta = sqrt(3) cos theta, 0 lt theta lt 90^(@) , then theta i...

    Text Solution

    |

  16. If tan theta + cot theta =2, " then " tan^(2) theta + cot^(2) theta i...

    Text Solution

    |

  17. 2 men and 7 boys can do a piece of work in 4 days . 4 men and 4 boys ...

    Text Solution

    |

  18. In an examination , one mark is awarded for every correct answer , wh...

    Text Solution

    |

  19. If x=asinthetaa n dy=btantheta, then prove that (a^2)/(x^2)-(b^2)/(y^2...

    Text Solution

    |

  20. Side of 2 similar triangles are in the ration 3 : 7 . Arease of these...

    Text Solution

    |