Step-by-step explanation:
3cos2x +sinx=1
3(1-2sin²x)+sinx=1
3-6sin²x+sinx=1
sinx(-6sinx+1)=1
either
sinx=1
sinx=sin(90)
:.x=90
or
-6sinx+1=1
-6sinx=1-1
sinx=0/-6
sinx=sin0,sin180
:.x=0,180and90
Its math just use a calculator or something
Answer:
About 72 degrees
Step-by-step explanation:
Answer: 0
Step-by-step explanation:
first you distribute the negative which gives you 7-3-4 which equals 0