Question

(Cos5-sin5)/(cos5+sin5)

Answer 1

Answer:

tan 50

Step-by-step explanation:

Given (Cos 5 + sin 5)/(cos 5 - sin 5)

Given cos 5 + sin 5 / cos 5 - sin 5

Divide by cos 5 we get

Cos 5 + sin 5 / cos 5 / cos 5 – sin 5 / cos 5

1 + tan 5 / 1 – tan 5

Tan 45 + tan 5 / 1 – tan 45 tan 5

= tan (45 + 5)

= tan 50