Question

3*5

Answer 1

15

Answer 2

Which angle is a solution of 2sin2x-1=0

Answer 3

1/2

Answer 4

sin2x=1/2
2x=30º
x=15º

cos^2(x)+sin(x)* cos(x)=1


cos(x)(cos(x)+sin(x)=1
cos(90º)(cos(90º)+sin(90º)=0(0+1)=1
x=90º

2sin(2x-1)=0
sin(2x-1)=0
2x-1=0
2x=1
x=1/2

Answer 5

so what is the degree of the angle

Answer 6

do you have options ?

Answer 7

180°120°225

Answer 8

where did you get thosed degrees from ? (i'm confused)

Answer 9

there are option on my worksheet

Answer 10

Solve the equation: 2sinx-1=0