Question

Taking A = 60° and B = 30° verify sin (A+B)/cos A cos B = tan A + tan B

Answer 1

Sin ( 60 + 30) = Sin 90° = 1

Cos 60° Cos 30° = ½ × √3/2 = √3/4

= 1 / √3/4 = 4/√3 ✔!!

This is L.H.S

Tan 60° + Tan 30° = √3 + 1/√3

Answer 2

Step-by-step explanation:

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