Question

(1 + tan 15 ) / (1 - tan 15 )

Answer 1

Answer:0

Step-by-step explanation:

Answer 2

Answer:

1.733

Step-by-step explanation:

As per the given question,

Using the identity of trigonometry,

$tan( a+b)=\frac{tana+tanb}{1-tana\cdot tanb}$

 As we can write that,

 tan 15 = tan (45-30)

  $tan(45-30)=\frac{tan 45-tan 30}{1+tan 45\cdot tan 30}$

  $tan 15 = \frac{1-0.577}{1+1\cdot 0.577}$

∴ tan 15 = 0.2683

Substitue the value of tan 15 = 0.2683.

$=\frac{1+tan 15}{1-tan 15}$

$=\frac{1+0.2683}{1-0.2683}$

 = 1.733

Hence, the answer is 1.733