Scan QR code or get instant email to install app
Question:
1212If \u03B8 is an obtuse angle and 
in Quadrant III, what is 
?
A
1212
explanation
1212Use the trigonometric identity 
to solve for 
, then use the Quadrant information to solve for 
, which can then be used to find 
and 
.
Substitute the 
into the trigonometric identity:
, which becomes
, so 
.
Evaluate the square root to find sin\u03B8:
. It is given that the cosine value is in Quadrant III, so the sine value is negative and equals 
.
Recall that 
and 
. Substitute the appropriate values to find tangent and secant:
Take more free practice tests for other PASSEMALL topics with our accuplacer test now!
Related Information
Comments