Home
Class 9
MATHS
Evaluate: sec^(2)18^(@)-cosec^(2)72^(@...

Evaluate:
`sec^(2)18^(@)-cosec^(2)72^(@)`

Text Solution

Verified by Experts

The correct Answer is:
0
Promotional Banner

Topper's Solved these Questions

  • COMPLEMENTARY ANGLES

    ICSE|Exercise EXERCISE |64 Videos

  • CO-ORDINATE GEOMETRY

    ICSE|Exercise QUESTIONS|12 Videos

  • COMPOUND INTEREST

    ICSE|Exercise TOPIC 2 (4 Marks Questions)|12 Videos

Similar Questions

Explore conceptually related problems

Evaluate: int (sec ^(2) x)/(cosec ^(2) x) dx

Evaluate: (sec 75^(@))/(cosec 15^(@))

Evaluate : cosec(65^(@)+A)-sec(25^(@)-A)

Evaluate : cosec(65^(@)+A)-sec(25^(@)-A)

Evaluate : (i) cosec 82^(@)-sec8^(@) (ii) sec 70^(@)sin 20^(@)+cos 20^(@)cosec 70^(@)

Evaluate : (sec^(2)theta-cot^(2)(90^(@)-theta))/("cosec"^(2)67^(@)-tan^(2)23^(2))+(sin^(2)40^(@)+sin^(2)50^(@))

The value of cot18^(@)(cot72^(@)cos^(2)22^(@)+(1)/(tan72^(@)sec^(2)68^(@))) is

Evaluate : (sec 42^(@))/( cosec 48^(@)) + ( 3 tan 50 ^(@))/( cot 40 ^(@)) - ( 2 cos 43 ^(@))/( sin 47^(@))

If the vectors (sec^(2)A)hati+hatj+hatk, hati+(sec^(2)B)hatj+hatk,hati+hatj+(sec^(2) c)hatk are coplanar, then the value of cosec^(2)A+cosec^(2)B+cosec^(2)C , is

int (sec^2x)/(cosec^2x) dx

ICSE-COMPLEMENTARY ANGLES-EXERCISE
  1. Evaluate: (cos 55^(@))/(sin 35^(@))+(cot 35^(@))/(tan 55^(@))

    Text Solution

    |

  2. Evaluate: sin^(2)40^(@)-cos^(2)50^(@)

    Text Solution

    |

  3. Evaluate: sec^(2)18^(@)-cosec^(2)72^(@)

    Text Solution

    |

  4. Evaluate: sin 15^(@)cos 15^(@)-cos 75^(@)sin75^(@)

    Text Solution

    |

  5. Evaluate: sin 42^(@)sin 48^(@)-cos 42^(@)cos 48^(@)

    Text Solution

    |

  6. Evaluate: sin(90^(@)-A)sinA-cos(90^(@)-A)cosA

    Text Solution

    |

  7. Evaluate: sin^(2)35^(@)-cos^(2)55^(@)

    Text Solution

    |

  8. Evaluate: (cot 54^(@))/(tan 36^(@))+(tan 20^(@))/(cot 70^(@))-2

    Text Solution

    |

  9. Evaluate: (2 tan 54^(@))/(cot 36^(@))-(cot80^(@))/(tan 10^(@))

    Text Solution

    |

  10. Evaluate: cos^(2)25^(@)-sin^(2)65^(@)-tan^(2)45^(@)

    Text Solution

    |

  11. Evaluate: ((sin 77^(@))/(cos 13^(@)))^(2)+((cos 77^(@))/(sin 13^(@))...

    Text Solution

    |

  12. Show that: tan 10^(@)tan 15^(@) tan 75^(@)tan 80^(@)=1

    Text Solution

    |

  13. Show that: sin 42^(@)sec 48^(@)+cos 42^(@)cosec 48^(@)=2

    Text Solution

    |

  14. Express the following in terms of angles between 0^(@) and 45^(@) si...

    Text Solution

    |

  15. Express the following in terms of angles between 0^(@) and 45^(@) co...

    Text Solution

    |

  16. Express the following in terms of angles between 0^(@) and 45^(@) co...

    Text Solution

    |

  17. For triangle ABC, show that "sin"(A+B)/2="cos"C/2

    Text Solution

    |

  18. For triangle ABC, show that "tan"(B+C)/2="cot"A/2

    Text Solution

    |

  19. Evaluate : 3(sin 72^(@))/(cos 18^(@))-(sec 32^(@))/(cosec 58^(@))

    Text Solution

    |

  20. Evaluate : 3 cos 80^(@)cosec 10^(@)+2sin 59^(@)sec 31^(@)

    Text Solution

    |