cw22756 cw22756

13-03-2021
Mathematics

contestada

if sin theta is 4/5, what is cos theta

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grecia07 grecia07

13-03-2021

sin theta = 4/5
we can see that 4 stands for y and 5 stands for r
We have to search the x (using phytagoream theorema)
x = 3

cos theta = x/r
cos theta = 3/5

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