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Mathematics 57 Online
OpenStudy (zeesbrat3):

Which expression can be used to find the distance between the points B and C of the entrance?

OpenStudy (zeesbrat3):

OpenStudy (zeesbrat3):

Please help

OpenStudy (ganpat):

do u wanna find distance BC ?

OpenStudy (zeesbrat3):

yes

OpenStudy (zeesbrat3):

Which expression can be used to find the distance between the points B and C of the entrance? 15 (cot 65° + sec 25°) 15(cot 65° + cot 25°)

OpenStudy (zeesbrat3):

and the last two answers are the same as those but dividing them.

OpenStudy (ganpat):

15/ tan 65 + 15/ tan25.. = 15 (cot 65 + cot 25) = 15 cot 90

OpenStudy (ganpat):

sorry for late reply..

OpenStudy (zeesbrat3):

Its okay, and thanks sooo much!!

OpenStudy (ganpat):

wait.. cot 90 = 0..

OpenStudy (ganpat):

wait, cot 90 = 0 so 15/ tan65 + 15/ tan 25 = 15/2.14 + 15/0.46 = 39.618..

OpenStudy (zeesbrat3):

okay..

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