$\tan(x/2)=\dfrac{1-\cos(x)}{\sin(x)}\\\\\tan\left(\dfrac{1}{2}\cdot\dfrac{7\pi}{4}\right)=\dfrac{1-\cos\dfrac{7\pi}{4}}{\sin\dfrac{7\pi}{4}}=\dfrac{1-\dfrac{1}{\sqrt{2}}}{-\dfrac{1}{\sqrt{2}}}=\boxed{1-\sqrt{2}}$

tan(7π/8) = 1 -√2

7 0

3 years ago

20 point REWARD + Brainleist <3

jek_recluse [69]

B the answer is b because yiu do like add e square 27 +* 9 + x = 8 -/273/73

5 0

2 years ago

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Which of the shaded regions below represents 3/5 of the whole circle

Norma-Jean [14]

Answer: B

Step-by-step explanation:

3 0

3 years ago

An airplanes altitude changes -378 feet over 7 minutes. What was the mean change of altitude in feet per minute?

Natalija [7]

Average rate= change in alt / change in time

r=-378/7=-54ft/min

4 0

3 years ago

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