Answer:
{-π/2, π/2}
Step-by-step explanation:
Rewrite this as:
7sin^2 x - 14sin x + 7 = 0. Reduce this result by dividing all terms by 7:
sin^2 x - 2sin x + 1
Temporarily replace "sin x" with y:
y^2 - 2y + 1 = 0
Solve this through factoring: (y - 1)^2 = 0, or y - 1 = ± 0, or y = ±1
Recalling that y = sin x, we write
sin x = ±1, whose solutions are sin x = 1 and sin x = -1
The solution of sin x = 1 is π/2 and that of sin x = -1 is -π/2
and so the solution set is {-π/2, π/2}
Answer:
i think 16
Step-by-step explanation:
this is what makes sense to be boo<3
W R I T E T H E E Q U A T I O N
23 = X + (X+7)
23 = 2X + 7
16=2X
/2 /2
8=X
Girls = X+7
= 8+7
= 15
S O T H E R E A R E 1 5 G I R L S
1,939,002 is greater than 1,393,005
1 is a term and 5a and 3b are terms because 1 is a single number and 5a and 3b both have variables
:)
