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DENIUS [597]
3 years ago
12

If tanA = 3cotA, show that, secA = 2​

Mathematics
1 answer:
zysi [14]3 years ago
3 0

Answer:

proved

Step-by-step explanation:

plz mark me brainliest

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4 years ago
Find the first, fourth, and eighth terms of the sequence. A(n) = –5 • 3n–1
jeka94

Answer:

<h2>C. -5; -135, -10,935</h2>

Step-by-step explanation:

\text{Substitute}\ n=1,\ n=4\ \text{and}\ n=8\ \text{to}\ A(n)=-5\cdot3^{n-1}:\\\\A(1)=-5\cdot3^{1-1}=-5\cdot3^0=-5\cdot1=-5\\\\A(4)=-5\cdot3^{4-1}=-5\cdot3^3=-5\cdot27=-135\\\\A(8)=-5\cdot3^{8-1}=-5\cdot3^7=-5\cdot2,187=-10,935

6 0
3 years ago
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Step-by-step explanation:

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