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skad [1K]
3 years ago
6

How do you solve this?

Mathematics
2 answers:
loris [4]3 years ago
8 0

Answer:73825

Step-by-step explanation:

Shuts shield grid

Solnce55 [7]3 years ago
7 0

Answer:

j=8

Step-by-step explanation:

<u>Special right triangles</u>:

The sides of all 30-60-90 triangles are in the proportion x:x\sqrt{3}:2x, where 2x is the hypotenuse of the triangle and x is the side directly opposite to the 30 degree angle.

Since the base of the triangle is directly opposite to the 30 degree angle, the hypotenuse, j, must be equal to 4\cdot 2=\boxed{8}

<u>Basic trig</u>:

\sin 30^{\circ}=\frac{4}{j},\\j=\frac{4}{\sin 30^{\circ}}=\boxed{8}

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