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sara1234

  • 2 years ago

help

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  1. freewilly922
    • 2 years ago
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    write down what sin(a+b) and cos(a+b) to see if either pattern fits. If one does you should be able to reverse that trig identity back to one trig function one angle.

  2. sunnymony
    • 2 years ago
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    sin(a+b)=sinaxcosb +cosaxsinb using this formula to solve the problem

  3. phi
    • 2 years ago
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    I think they want you to memorize http://www.mathwarehouse.com/trigonometry/identities/angle-sum-formula.php

  4. sunnymony
    • 2 years ago
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    |dw:1353342333243:dw|

  5. sunnymony
    • 2 years ago
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    |dw:1353342478497:dw|

  6. sara1234
    • 2 years ago
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    can you please type it out i dont understand it

  7. sunnymony
    • 2 years ago
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    hey plz check the question?

  8. sara1234
    • 2 years ago
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    umm why?

  9. sunnymony
    • 2 years ago
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    becoz the question is wrong

  10. sara1234
    • 2 years ago
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    noo

  11. sunnymony
    • 2 years ago
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    u know this answer

  12. sara1234
    • 2 years ago
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    noooooooooooooo

  13. sunnymony
    • 2 years ago
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    use 6 in place of 7. use this no. to check the question

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