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  • 28-11-2021
  • Mathematics
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Would anyone be able to help with this? on my review and not sure how to do it

Would anyone be able to help with this on my review and not sure how to do it class=

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ashish4112119
ashish4112119 ashish4112119
  • 28-11-2021

90 degrees - 78 degrees = 12 degrees

cofunction of sin is cos

answer : cos12

Answer Link

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