. Also, we know that 
. Let's find out value of 
using above formula:
is negative in third quadrant , Therefore 
.
Find the value of cos θ if the angle θ is in the third quadrant and sinθ= -0.8
A) 233.1°...
Mathematics, 10.03.2020 18:08, lazymarshmallow7
Find the value of cos θ if the angle θ is in the third quadrant and sinθ= -0.8
A) 233.1° B) -0.8 C) 1.0 D) -0.6
Answers: 3
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