What are all the values for A between 0 to 360 degrees? sinA+1=tanA+cosA
1 Answer
Apr 12, 2018
Explanation:
We rewrite
#sinA + 1 = sinA/cosA + cosA#
#sinA + 1 = (sinA +cos^2A)/cosA#
#sinAcosA + cosA = sinA + cos^2A#
#0 = cos^2A + sinA - cosA - sinAcosA#
#0 = cosA(cosA - 1) - sinA(cosA - 1)#
#0 = (cosA -sinA)(cosA - 1)#
#cosA = sinA or cosA = 1#
The first equation is clearly true when
Hopefully this helps!