anonymous
  • anonymous
Can someone help me with trigonometric identities?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Savvy
  • Savvy
yep..!!!
anonymous
  • anonymous
Simplify the left side in order to get the right side. Please show the steps! Thank you! |dw:1333059876416:dw|
Savvy
  • Savvy
factorise (sinx)^4 - 1 as [(sinx)^2 - 1][(sinx)^2 + 1] then [(sinx)^2 - 1]= -(cosx)^2 cancel the denominator wid it.... now left wid -[1+(sinx)^2] write (sinx)^2 as 1 - (cosx)^2 and you'll get it.....

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anonymous
  • anonymous
|dw:1333060250509:dw|
anonymous
  • anonymous
prolly can see that last line is what you want...
anonymous
  • anonymous
Wait a second, how do sin^2 - 1 and 1 - sin^2 cancel? Do you multiply it by 1 or something?
anonymous
  • anonymous
|dw:1333060558856:dw|
anonymous
  • anonymous
|dw:1333060618728:dw|
anonymous
  • anonymous
Oh...thanks everyone!
anonymous
  • anonymous
yw

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