Math, asked by jainamdinesh1pb3l0e, 1 year ago

how is the fourth ans correct

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Answered by shubhamranjan52053

a b and c are real no. so u can put any value of a b and c such that there sum will be 8. e.g- a 2, b =2 and c = 4. now in these values check the equation you will find that option no. 4 is absolutely right

jainamdinesh1pb3l0e: but i want full proof

shubhamranjan52053: there is only method to check it and this is putting values by self and check. otherwise not clearly solution bro..

Answered by xXItzSujithaXx34

Step-by-step explanation:

Thus, from triangle DEC, we can say that cosθ=DECD . From the distance formula, we can say the that the length of DE is 12√3 and CD is √32 . Therefore, the angle between two faces is cos−113 . So, the correct answer is “Option B”.

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