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What is the sine of an acute angle whose cosine is 7/25?

 Dec 6, 2021
 #1
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cos(-1)=.28

cos=73.740deg

sin73.740=0.96

 Dec 6, 2021
 #2
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(0.28)2 + (0.96)2 = 1

 

Your answer is correct! laugh

Guest Dec 6, 2021
 #3
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Remmber, fo an angle:

sin^2 + cos^2 = 1

 

(7/25)^2 + cos^2 = 1

1- (7/25)^2 = cos ^2

576/625 = cos^2

sqrt 576 / 25   = cos   =  24/25   

 Dec 7, 2021

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