Simplify (1 − sin x)(1 + sin x). (2 points)

a
1

b
cos2 x

c
sin2 x

d
tan2 x

cos²x

Step-by-step explanation:

(a-b)(a+b)=a²-b²

sin²x+cos²x=1 => cos²x=1-sin²x

(1 − sin x)(1 + sin x)=1-sin²x=cos²x

the equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation: