i have a homework question where 12cos4.2+12isin4.2is˜-5.88-10.46i I put in 4.2-

Question

i have a homework question where 12cos4.2+12isin4.2is˜-5.88-10.46i I put in 4.2->cos>x12 in my calculator it comes outto˜11.96, is it because of radians and degrees? what should ido to get the answer? thanks And how should i change 4.2 to degrees if my calculator doesnot have that function? i have a homework question where 12cos4.2+12isin4.2is˜-5.88-10.46i I put in 4.2->cos>x12 in my calculator it comes outto˜11.96, is it because of radians and degrees? what should ido to get the answer? thanks And how should i change 4.2 to degrees if my calculator doesnot have that function?

Explanation / Answer

To convert radians to degrees multiply by 180/. In this case; (4.2)(180/)=(756/) Now try that in your calculator and you should see that 12cos (756/)=-5.88

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