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16,17,18 please give it to me the fastest possible as I need it for practising again

16,17,18 please give it to me the fastest possible as I need it for practising again

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Grade:11

1 Answers

Rohan Kadkol
22 Points
6 years ago
16)
A+b= pi/6 or 5pi/6
A-b= pi/6 or 11pi/6
Upon solving the equations and trying to get positive value for a and b and also trying to match a and b with any one of the options we find that a=25pi/24 and b=19pi/24 ie a+b is 5pi/6 and a-b is pi/6
 
17)
There is a formula that if tana+tanb+tanc = tana x tanb x tanc then a+b+c =pi. Thus theta = pi/12 and since the period of tan is pi thus theta is npi+pi/12
 
18)
Sorry... Couldnt solve... Will send if i can solve later

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