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5 votes
Knowing that sin 30° = 1, what is a?

OA. 3.5
OB. 14
OC. 12.12
OD. 7
30⁰
7
a
60⁰

Knowing that sin 30° = 1, what is a? OA. 3.5 OB. 14 OC. 12.12 OD. 7 30⁰ 7 a 60⁰-example-1

1 Answer

7 votes

Answer:

B

Explanation:

sin30° =
(opposite)/(hypotenuse) =
(7)/(a) =
(1)/(2) ( cross- multiply )

a = 7 × 2 = 14

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