Home
Class 12
MATHS
Find the value of sin^(2)5^(@)+ sin^(2)1...

Find the value of `sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +sin^(2)90^(@)`.

Promotional Banner

Topper's Solved these Questions

  • Circular Functions, Identities

    A DAS GUPTA|Exercise Exercise|300 Videos

  • Circles

    A DAS GUPTA|Exercise EXERCISE|122 Videos

  • COMPLEX NUMBERS

    A DAS GUPTA|Exercise EXERCISE|224 Videos

Similar Questions

Explore conceptually related problems

sin^(2) 75^(@) - sin^(2)15^(@)=

What is the value of sin^(2) 15^(@) + sin^(2) 20^(@) + sin^(2)25^(@) + ……… + sin^(2) 75^(@) ?

Find the value of sin37(1/2)^(@).sin7 (1/2)^(@)

The value of sin^(2) 1^(@) + sin^(2) 2^(@) + sin^(2) 3^(@)+ . . . . + sin^(2) 89^(@) + sin ^(2) 90^(@) is

Find the value of (sin^2 33^@ + sin^2 57^@)

What is the value of the sin^(2) 6^(@) + sin^(2) 12^(@) + sin^(2) 18^(@) + "……" + sin^(2) 84^(@) + sin^(2) 90^(@) ?

Find the value of sin^(2)1^(@)+sin^(2)2^(@)+sin^(2)3^(@)+ ----+sin^(2)87^(@)+sin^(2)88^(@)+sin^(2)89^(@)+sin^(2)90^(@) .

Write the value of 2sin 75^(@) sin15^(@)

Find the value of sin^(2)(120^(@)-A)+sin^(2)A+sin^(2)(120^(@)+A):

A DAS GUPTA-Circular Functions, Identities -Exercise
  1. If (cos (alpha1- alpha2))/(cos (alpha1+ alpha2)) = (cos (alpha3+ alph...

    Text Solution

    |

  2. If sin x + sin y = a, cos x - cos y = b then the value of tan ((y-x)/2...

    Text Solution

    |

  3. Find the value of sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +si...

    Text Solution

    |

  4. The numerical value of cos 2pi/7 + cos 4pi/7 + cos 6pi/7 is=........

    Text Solution

    |

  5. The numerical value of sin pi/18 * sin 5pi/18* sin 7pi/18 is.............

    Text Solution

    |

  6. The numerical value of tan 20^circ* tan 40^circ* tan 80^circ =.

    Text Solution

    |

  7. The numerical value of cos(( pi)/15)* cos ((2pi)/15)* cos ((4pi)/15) ...

    Text Solution

    |

  8. The numerical value of sin 6^circ* sin 42^circ* sin 66^circ* sin 78^c...

    Text Solution

    |

  9. The numerical value of cot^(2)36^circ* cot^(2)72^circ =.

    Text Solution

    |

  10. The numerical value of sin 12^circ* sin 48^circ* sin 54^circ= .

    Text Solution

    |

  11. If sin 54^circ = 1/2 + sin theta, 0 lt theta lt pi/2, then theta = .

    Text Solution

    |

  12. The numerical value of tan 225^circ *cot 405^circ + tan 765^circ* cot...

    Text Solution

    |

  13. The numerical value of cos 2pi/7 + cos 4pi/7 + cos 6pi/7 is=........

    Text Solution

    |

  14. If (1 + sin 2x)/(1- sin2x) = tan^(2) *(alpha +x) for all x then the ...

    Text Solution

    |

  15. If cos(x -y), cos x and cos(x + y) are in HP then cos x* sec (y/2)= .

    Text Solution

    |

  16. If A, B, C are in AP and B = pi/4 , then tan A *tan B*tan C = .

    Text Solution

    |

  17. If p in (0, pi) then the set of values of p for which sin p* cos^(3) ...

    Text Solution

    |

  18. sec^(2)theta = 4xy/(x+y)^(2) is true if and only if

    Text Solution

    |

  19. If cos theta + sec theta = 2 then cos^(n)theta+ sec^(n)theta is equal ...

    Text Solution

    |

  20. If alpha = theta1 +theta2 and x = theta1 -theta2 and tan theta1 = lamb...

    Text Solution

    |