Answer:
c = 72
Step-by-step explanation:
multiply both sides of the equation by 8 to eliminate the fraction
c = 8 × 9 = 72
note that = 9
Triangle A B C is shown. Angle A B C is a right angle. Angle B C A is 22 degrees and angle C A B is 68 degrees.
2 answers:
Answer:
cos(C)
Step-by-step explanation:
As you can see in the picture I attached, the angles are in capital letters and the lowercase letters are the sides of the triangle. This is a basic ABC set up for a triangle.
Sine is equal to the opposite side of the angle/the hypotenuse (the long diagonal side).
Cosine is equal to the adjacent side of the angle (the one attached to it)/the hypotenuse (the long diagonal side).
Tangent is equal to the opposite side of the angle/the adjacent side of the angle.
In this case, sin(A) would equal (a/b) and cos(C) would also equal (a/b), so they're equal.
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Answer:
B :
Step-by-step explanation:
If you divide a rhombus using its diagonals, you get 4 right triangles, whose legs are both 1/2 the length of the diagonals.
This means that the legs of one of those 4 triangles have lengths of 2x/2, and 8x/2, so the legs of one of those triangles x and 4x. This makes the length of one side equal to . Because all 4 sides are the same length, you multiply this value by 4, and get
, which is B.