Home
Class 10
MATHS
Write 'true' or 'false' : sin theta=...

Write 'true' or 'false' :
`sin theta=(x^(2)+y^(2))/(2xy)`

Text Solution

Verified by Experts

The correct Answer is:
False.
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS AND TRIGONOMETRIC IDENTITIES

    CALCUTTA BOOK HOUSE|Exercise EXERCISE|66 Videos

  • THEOREMS RELATED TO TANGENT IN A CIRCLE

    CALCUTTA BOOK HOUSE|Exercise EXERCISE 4.2|23 Videos

  • TRIGONOMETRIC RATIOS OF COMPLEMENTARY ANGLES

    CALCUTTA BOOK HOUSE|Exercise EXERCISE|28 Videos

Similar Questions

Explore conceptually related problems

Write 'true' or 'false' : sec theta=(2xy)/(x^(2)+y^(2))

Write true or false 5^2 = 3^2 + 4^2

Write true of false : cot theta=(cos theta)/(sin theta)

Write true or false, Value of sin^2 3 theta+ cos^2 3 theta = 3 .

Write True or False: Value of sin^25theta+cos^25theta = 5

Write True or False : If x = 3cos theta and y = 3 sin theta then x^2+y^2 = 1 .

Write true or false : sin theta is a product of sin and theta .

Write True or False For any angle theta,sin theta =4/3 is possible.

Write True or False If sin(theta-30^@)=1/2 then sec theta = 2/sqrt3 .

Write true of false : sin theta is a product of sin and theta .

CALCUTTA BOOK HOUSE-TRIGONOMETRIC RATIOS AND TRIGONOMETRIC IDENTITIES -EXERCISE
  1. If (1+tanA)(1+tanB)=2, then tan(A+B)=

    Text Solution

    |

  2. Write 'true' or 'false' : sec theta=(2xy)/(x^(2)+y^(2))

    Text Solution

    |

  3. Write 'true' or 'false' : sin theta=(x^(2)+y^(2))/(2xy)

    Text Solution

    |

  4. Fill in the blanks : If sin^(4)A+sin^(2)A=1, then cot^(4)A+cot^(2)...

    Text Solution

    |

  5. Fill in the blanks : "tan"(pi)/(16) "tan"(3pi)/(16)"tan"(5pi)/(16)"t...

    Text Solution

    |

  6. Fill in the blanks : tan theta=sqrt(3), cos theta= -(1)/(2) and 0^(...

    Text Solution

    |

  7. If theta lies in the fourth quadrant and sec theta=(5)/(3), then the ...

    Text Solution

    |

  8. If cos (A-B)=(1)/(2) and cot(A+B)=sqrt(3), then find the least positiv...

    Text Solution

    |

  9. If n be an integer, then find the value of tan{(npi)/(2)+(-1)^(n).(pi...

    Text Solution

    |

  10. Find the least value of (2 sin^(2)theta+3 cos^(2)theta).

    Text Solution

    |

  11. If cos theta+sectheta=sqrt(3), then prove that cos^(3)theta+sec^(3)the...

    Text Solution

    |

  12. If 3 sin theta+4 cos theta=5, then prove that sin theta=(3)/(5).

    Text Solution

    |

  13. If sin theta+"cosec"theta=2, then prove that sin^(7) theta+"cosec"^(7)...

    Text Solution

    |

  14. If cos theta-sin theta=sqrt(2)cos theta, then prove that cos theta+sin...

    Text Solution

    |

  15. If (a^(2)-b^(2))sin theta+2 ab cos theta-(a^(2)+b^(2))=0, then prove t...

    Text Solution

    |

  16. Prove that tan theta+sqrt((1-sintheta)/(1+sin theta))=sec theta.

    Text Solution

    |

  17. Prove that (tan theta+sec theta)^(2)=(1+sin theta)/(1-sin theta).

    Text Solution

    |

  18. Prove that (tan theta)/(sec theta-1)+(tan theta)/(sec theta+1)=2 "cose...

    Text Solution

    |

  19. Prove that sqrt((1+costheta)/(1-costheta))+sqrt((1-cos theta)/(1+cos ...

    Text Solution

    |

  20. Prove that (sin A+sinB)/(cosB-cosA)=(cos A+cosB)/(sinA-sinB).

    Text Solution

    |