If the sin 30° = one half, then which statement is true?

cos 150° = 0, because the angles are supplements
cos 60° = one half, because the angles are complements
cos 150° = 1, because the angles are supplements
cos 60° = 0, because the angles are complements

True statement:

B)cos 60° = one half, because the angles are complements

Step-by-step explanation:

We have ,  sin 30° = one half,or . Let's find out which of the following statements are true regarding this :

A)cos 150° = 0, because the angles are supplements  

 , We know that supplements are the angles which add up to give the sum as 180° . cos 150° = 0

⇒ cos(180° - 30°)

⇒ -cos30°

⇒

False statement .

B)cos 60° = one half, because the angles are complements

, We know that complementary are the angles which add up to give the sum as 90° , which is true . So ,True statement .

C)cos 150° = 1, because the angles are supplements

 , We know that supplements are the angles which add up to give the sum as 180° . cos 150° = 0

⇒ cos(180° - 30°)

⇒ -cos30°

⇒

False statement .

D)cos 60° = 0, because the angles are complements

, angles are complement but , cos 60° = 0 is wrong , cos 60° = 0.5 . false statement .

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

12

step-by-step explanation: