$\bf tan^2(x)-1=0\implies tan^2(x)=1\implies tan(x)=\pm\sqrt{1} \\\\\\ tan^{-1}[tan(x)]=tan^{-1}(\pm 1)\implies x=tan^{-1}(\pm 1)\implies x= \begin{cases} \frac{\pi }{4}\\\\ \frac{3\pi }{4}\\\\ \frac{5\pi }{4}\\\\ \frac{7\pi }{4} \end{cases}$

5 0

2 years ago

I need help and is timed please help?!!!!!

Xelga [282]

Answer:

Ddddddddddddddddddddddd.

6 0

2 years ago

Is 267 the largest number in the sum of 3 integers evaluated from 269?

Anni [7]

Yes. it is the largest number

4 0

3 years ago

Hannah but 3.4 pounds of apples she paid $.89 per pound how much did Hana pay for apples

Irina18 [472]

Answer:

3.026 $

Step-by-step explanation:

3.4 × 0.89 = 3.026 $

3 0

3 years ago