Someone .i need with 12th grade trig.

x = 13.7

Step-by-step explanation:

This is a right triangle so we use the trig ratios. We need an angle of reference (not the right angle) and any side (which is given, hypotenuse = 47).

We can either find the angle at the top or the right to be the angle of reference, Θ (theta).

Angle at the top:

The two angles, 17° and the unknown interior angle add to 90° because they are complementary.

∠Θ = 90° - 17° = 73°

Now use the trig ratio cosine.

cosΘ = adjacent ÷ hypotenuse

cos(73°) = x / 47

x = 47cos(73°)

x = 13.74147    Round down the exact answer to nearest tenth

x ≈ 13.7                Answer

The value of x is the same as the side adjacent to the angle of reference I chose.

If I chose the other missing angle to be the angle of reference, I would use sine and x would be opposite.

step-by-step explanation:

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.