Home
Class 10
MATHS
If sin 3 theta = cos (theta- 26°) where ...

If sin 3 theta = cos (theta- 26°) where 3 theta and (theta -26°) are acute angles. Find the value of theta.

Promotional Banner

Topper's Solved these Questions

  • COMPLEMENTARY ANGLES AND THEIR TRIGONOMETRIC RATIOS

    KALYANI PUBLICATION|Exercise EXAMPLE|5 Videos

  • COORDINATE GEOMETRY

    KALYANI PUBLICATION|Exercise EXAMPLE|16 Videos

Similar Questions

Explore conceptually related problems

If sec5theta=cosec(theta-36^@) where theta is an acute angle, then find the value of theta .

If cos 9 theta = sin theta and 9 theta < 90° then find the value of tan 5 theta.

If cot 5 theta = tan 10 theta, then find the value of theta.

If cos (20° + theta) = sin 30°, then find the value of theta.

If sin theta-cos theta=0 ,find the value of sec theta+ cosec theta

If theta is a positive acute angle and 2 costheta=1/2 sectheta ,find the value of theta .

If sin(theta+34^@)=costheta and theta is acute then the value theta will be

If sec theta- tan theta=1/2 ,find the value of sec theta+ tan theta

If 7 sin^2theta + 3 cos^2 theta = 4, then prove that tantheta = 1/sqrt(3)

Find cos^2 theta - sin^2 theta . .

KALYANI PUBLICATION-Complementary Angles and there Trigonamytry Ratios-EXERCISE
  1. Evaluate sin theta sec (90 - theta) + cos theta cosec (90 - theta).

    Text Solution

    |

  2. Evaluate cos thetasin theta + cos thetacos (90 - theta) + {(sin thet...

    Text Solution

    |

  3. If sin 3 theta = cos (theta- 26°) where 3 theta and (theta -26°) are a...

    Text Solution

    |

  4. If cot 5 theta = tan 10 theta, then find the value of theta.

    Text Solution

    |

  5. If cos (20° + theta) = sin 30°, then find the value of theta.

    Text Solution

    |

  6. If cos 9 theta = sin theta and 9 theta < 90° then find the value of ta...

    Text Solution

    |

  7. If tan 2 theta = cot (theta - 18°), then the value of theta.

    Text Solution

    |

  8. Prove that: tan 5° tan 85° tan 30° tan 65° tan 25° = 1/sqrt 3.

    Text Solution

    |

  9. Prove that: tan 4° tan 43° tan 47° tan 86° = 1.

    Text Solution

    |

  10. Prove that: tan 35° tan 40° tan 45° tan 50° tan 55° = 1.

    Text Solution

    |

  11. Prove that: cosec (65° + theta) - sec (25° - theta) - tan (55° - the...

    Text Solution

    |

  12. Prove that: (2 sin 68°)/(cos 22°)-( 2 cot 15°)/( 5 tan 75°)- 3( tan ...

    Text Solution

    |

  13. Prove that: (cos^2 20° + cos^2 70°)/(sin^2 20° + sin^2 70°) +sin^2 6...

    Text Solution

    |

  14. Prove that: (tan 50° + sec 50°)/(cot 40° + cosec 40°) + cos 40° cose...

    Text Solution

    |

  15. In a ∆ ABC prove that sin( (A+B)/2) = COS (c/2).

    Text Solution

    |

  16. In a ∆ ABC prove that cos ((A+B)/2) = sin (c/2).

    Text Solution

    |

  17. In a ∆ ABC prove that tan( (A+B)/2) = cot( C/2).

    Text Solution

    |

  18. In a ∆ ABC prove that sec^2 (B+C)/2 -1=cot^2 A/2.

    Text Solution

    |

  19. If A +B = 90, prove that (cos A + cos B)/(sin A+ sinB)=1.

    Text Solution

    |

  20. If A +B = 90, prove that (tan A + cosec B)^2=(1+sin A)/(1- cos B).

    Text Solution

    |