Home
Class 8
MATHS
sin ^(2) 25^(@) + sin ^(2) 65^(@) is eq...

`sin ^(2) 25^(@) + sin ^(2) 65^(@) ` is equal to

A

0

B

` 2 sin^(2) 25^(@)`

C

` cos ^(2) 65^(@)`

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRICAL RATIOS OF STANDARD ANGLES

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet - 32 |10 Videos

  • TRIGONOMETRICAL RATIOS OF STANDARD ANGLES

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet - 32 |10 Videos

  • TRIGONOMETRICAL RATIOS

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet - 40|1 Videos

  • VOLUME AND SURFACE AREA

    S CHAND IIT JEE FOUNDATION|Exercise Unit Test - 5|20 Videos

Similar Questions

Explore conceptually related problems

sin^(2)21^(@) + sin^(2) 69^(@) is equal to

sin^(2)5^(@) + sin^(2)25^(@) + sin^(2)45^(@) + sin^(2) 65^(@) + sin^(2) 85^(@) is equal to:

sin^(2)17.5^(@) +sin^(2)72.5^(@) is equal to:

sin^(2)17.5^(@)+sin^(2)72.5^(@) is equal to

sin^(2)24^(@)-sin^(2)6^(@) is equal to

cos 5^(@) - sin 25^(@) is equal to

Without using trigonometric table, evaluate the following: (sin ^(2) 25 ^(@) + sin ^(2) 65^(@))+sqret3 (tan 5 ^(@). Tan15^(@).tan30^(@).tan75^(@).tan85^(@))

cos20^(@)+2sin^(2)55^(@)-sqrt(2)sin65^(@) is equal to

sin^(2)(35^(@))+sin^(2)(55^@) is equal to

The valur of sin 1^(@)+ sin 2^(@)+…+ sin 359^(@) is equal to

S CHAND IIT JEE FOUNDATION-TRIGONOMETRICAL RATIOS OF STANDARD ANGLES -Question Bank - 33
  1. The value of (sin 30^(@) - cos 60^(@) + tan 45^(@))/(cos 90^(@) + tan ...

    Text Solution

    |

  2. The value of (1)/(2) sin ^(2) 90^(@) sin^(2) 30^(@) cos ^(2) 45^(@) + ...

    Text Solution

    |

  3. The value of (cos 0^(@) + sin 45^(@) + sin 30^(@)) (sin 90^(@) - cos 4...

    Text Solution

    |

  4. (tan 60^(@) - tan 30^(@))/(1 + tan 60^(@) tan 30^(@)) equal

    Text Solution

    |

  5. Find the value of x, if sin 2 x = sin 60^(@) cos 30^(@) - cos 60^(@...

    Text Solution

    |

  6. tan 26^(@) - cot 64^(@) equals

    Text Solution

    |

  7. (sin19^@)/(cos71^@)+(cos73^@)/(sin17^@)

    Text Solution

    |

  8. Consider the following equations : 1 . (cos 75^(@))/( sin 15 ^(@)) +...

    Text Solution

    |

  9. sin ^(2) 25^(@) + sin ^(2) 65^(@) is equal to

    Text Solution

    |

  10. If sin (30 ^(@) - theta) = cos (60 ^(@) + phi) , then

    Text Solution

    |

  11. The value of cot 15^(@) cot 16^(@) cot 17^(@) . . . . . cot 73^(@) cot...

    Text Solution

    |

  12. If sin theta = cos theta, then value of theta is :

    Text Solution

    |

  13. Value of cos^(2) 5^(@) + cos^(2) 10^(@) + cos^(2) 80^(@) + cos ^(2) 85...

    Text Solution

    |

  14. If sin 3 theta = cos (theta - 2^(@)) where 3 theta and (theta - 2^(@...

    Text Solution

    |

  15. If tan theta = 1 and sin phi = (1)/( sqrt(2)) , then the value of co...

    Text Solution

    |

  16. If x cos 60^(@) + y cos 0^(@) = 3 and 4x sin 30^(@) - y cot 45^(@) =...

    Text Solution

    |

  17. Which one of the following is true ?

    Text Solution

    |

  18. If x + y = 90^(@) , then what is sqrt( cos x cosec y - cos x sin...

    Text Solution

    |

  19. If 0^(@) lt theta lt 90^(@) and cos^(2) theta - sin^(2) theta = (1)/(...

    Text Solution

    |

  20. The value of sin^(2) (90^(@) - theta) [ 1 + cot ^(2) (90^(@) - theta)...

    Text Solution

    |