The value of the side 'a' will be 14 units.
What is trigonometry?
The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry.
The value of a is calculated as:-
Sin 30 = P / H
Sin 30 = 7 / a
1 / 2 = 7 / a
a = 7 x 2
a = 14 units
Therefore the value of the side 'a' will be 14 units.
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