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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
asked 98.5k views
4 votes
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-example-1
asked
User Mariyam
by
7.1k points

1 Answer

6 votes

90 degrees - 78 degrees = 12 degrees

cofunction of sin is cos

answer : cos12

answered
User Marek Skiba
by
7.9k points
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