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5. In the given figure, if AB = 14 cm, thenthe value of tan B is:EL-------------D13 cm5 cm(a)ما| در(a) 13 |
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Answer» option A is the right answer option a is the right answer option A is the right answer option A is the right answer A is right.............. A is right answer........... option (a) 4/3 is correct A is the answer for the solution Option A is perfect answer DC=5= AE(AC)^2+(DC)^2= (AD)^2(AC)^2+(5)^2=(13)^2(AC)^2= 169-25AC= √144=12SO ED= 12CMIN ∆ BEDACDE IS A RECTANGLE , AD IS DAIGONAL IT DEVIDE <ADE= <ADC<ADE= 1/2×90= 45°TAN45= BE/CD1= BE/12BE= 12 CMtanB= p/b= DE/BE= 12/12=1 |
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