consider the formulae sin(A+B)=sinAcosB+cosAsinB and cos(A+B)=cosAcosB-sinAsinB Using the above formulae find tan75

Asked by Ashrene | 26th Oct, 2012, 01:37: PM

Expert Answer:

To find tan 75, first find sin 75 and cos 75 and then use the formula tan A = sinA/ cosA
 
You can find sin 75 by taking A = 45 and B = 30 and using the formula of sin (A + B).

Answered by  | 26th Oct, 2012, 02:12: PM

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