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How do you find cos15

  1. How do you find cos15
    1. answers icon 1 answer
    2. Katie asked by Katie
    3. views icon 514 views
  2. 1. Power reducing formulas can be used to rewrite 8sin^2 xcos^2 x as 1-cos4x. True or False?2. Find the exact value of cos15
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    2. mysterychicken asked by mysterychicken
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  3. Evaluate 2sin15° cos15°
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    2. Mandar asked by Mandar
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  4. cos15°cos30°- sin15°sin30° =
    1. answers icon 1 answer
    2. Ashley asked by Ashley
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  5. How can I evaluate the expression below without using calculator?cos15*2sin15 Thank you!
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    2. Anonymous asked by Anonymous
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  6. prove that 4cos36+cot15/2=1+4+9+16+25+36,ifcot15/2 is1+cos15/+sin15
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    2. edward asked by edward
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  7. Which value is equivalent to cos15∘?a. sin45∘ b.sin75∘ c. sin85∘ d. sin30∘
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    2. GROOVE asked by GROOVE
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  8. Evaluate the expression cos75°sin15°+sin75°cos15°
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    2. Chad asked by Chad
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  9. How much work is done by the orderly pushing a 85 kg person up a 5 m ramp inclined at an angle of 15° to the horizontal?I did W
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    2. Holly asked by Holly
    3. views icon 1,098 views
  10. Reduce the following to the sine or cosine of one angle:(i) sin145*cos75 - cos145*sin75 (ii) cos35*cos15 - sin35*sin15 Use the
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    2. Paul C asked by Paul C
    3. views icon 1,204 views