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Which value is the solution for the equation cotx/2=-1? A. 3pi/2 B. 3pi/4 C. 5pi/4 D. 7pi/4

Which value is the solution for the equation cotx/2=-1? A. 3pi/2 B. 3pi/4 C. 5pi/4 D. 7pi/4
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1 vote
Which value is the solution for the equation cotx/2=-1?

A. 3pi/2
B. 3pi/4
C. 5pi/4
D. 7pi/4

User Greenafrican
by
8.2k points

2 Answers

4 votes

Answer:

3pi

Explanation:

on a pex

User Shakirov Ramil
by
7.7k points
5 votes
cot x/2 = -1
1/tan x/2 = -1
tan x/2 = -1
x/2 = arctan(-1) = 3pi/4
x = 2(3pi/4) = 3pi/2
x = 3pi/2

option a is the correct answer.
User Samuel EUSTACHI
by
8.1k points
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