Triangle Congruence: SSS and HL — Unit test

Question 1

The law of cosines for RST can be set up as 52 = 72 + 32 – 2(7)(3)cos(S). What could be true about RST?Law of cosines: a2 = b2 + c2 – 2bccos(A)

Revolt · Accepted Answer

s = 5 and t = 3

Question 2

In which triangle is the value of x equal to tan−1? (Images may not be drawn to scale.)

Revolt · Accepted Answer

A right triangle is shown. The length of 2 sides are 5.2 and 3.1. The angle opposite to side with length 3.1 is x.

Question 3

Which statements are true about triangle QRS? Select three options.

Question 4

In right triangle XYZ, the right angle is located at vertex Y. The length of line segment XY is 12.4 cm. The length of line segment YZ is 15.1 cm.

Revolt · Accepted Answer

39.4°

Question 5

Law of sines:

Revolt · Accepted Answer

59°

Triangle Congruence: SSS and HL — Unit test Answers