Answer:
144
Step-by-step explanation:
Answer:
154
Step-by-step explanation:
Answer:
69,124
Step-by-step explanation:
subtract 305,215 by 236,091
305,215
- 236,091
We have to prove that the tangent is an odd function.
If the tangent is an odd function, the following condition should be satisfied:

From the figure we can see that the tangent can be expressed as:
We can start then from tan(t) and will try to arrive to -tan(-t):

We have arrived to the condition for odd functions, so we have just proved that the tangent function is an odd function.