Lesson Example Discussion Quiz: Class Homework |
Quiz At Home |
Title: Law of sines and cosines |
Grade: 10-a Lesson: S3-L7 |
Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the ten problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts. |
Quiz: at Home
Problem Id | Problem | Options |
---|---|---|
1 |
A triangle has an angle of 45 degrees, and its opposite side is 10 units. Another angle is 60 degrees. What is the length of the side opposite the 60-degree angle? |
A) \$ 5\sqrt6 \$ B) \$ 2\sqrt3 \$ C) \$ 3\sqrt2 \$ D) \$ 5\sqrt3 \$ |
2 |
If A = \$ \sqrt5\$, B = x, C = 5, and c = 135°. Find the value of x. |
A) \$\sqrt2\$ B) \$ \sqrt10\$ C) \$ 2\sqrt5\$ D) \$5 \sqrt2\$ |
3 |
Given a triangle where \$A = 40^\circ\$, \$B = 60^\circ\$, and c = 8 units. Find the lengths of the remaining sides and the other angles. |
A) \$C = 70^\circ\$, a = 4.214 units, and b = 7.052 units B) \$C = 120^\circ\$, a = 3.12 units, and b = 7.532 units C) \$C = 80^\circ\$, a = 5.214 units, and b = 7.052 units D) \$C = 60^\circ\$, a = 5.214 units, and b = 6.122 units |
4 |
In triangle GHI, angle G = 35 degrees, angle H = 65 degrees, and side h (opposite angle H) is 14 units. Find side g (opposite angle G) using the Law of Sines. |
A) 9.86 units B) 5.76 units C) 3.33 units D) 8.86 units |
5 |
Given a triangle with sides a = 8 units, b = 12 units, and angle C = 110 degrees, find side c using the Law of Cosines. |
A) 27.36 units B) 15.54 units C) 11.45 units D) 16.54 units |
6 |
A triangle with sides of 3, 5, and 7 units. Find the angle between the sides of 3 and 5 units. |
A) 150° B) 60° C) 120° D) 90° |
7 |
Triangle DEF has side DE measuring 6 cm, side EF measuring 9 cm, and the angle between sides DE and EF measures 60 degrees. Find the length of side DF. |
A) \$ \sqrt78 \$ B) \$ \sqrt63 \$ C) \$ \sqrt73 \$ D) \$ \sqrt68 \$ |
8 |
Solve triangle ABC, given b = \$3\sqrt2\$, c = 3, and C = 30°. Find angle B. |
A) 45° B) 60° C) 90° D) 30° |
9 |
Triangle JKL has side lengths JK = 7 units, KL = 9 units, and JL = 11 units. Find the measure of angle K. |
A) 82.2° B) 82.8° C) 72.3° D) 74.8° |
10 |
In triangle ABC, side AB measures 7 units, side AC measures 9 units, and angle A measures 120 degrees. Find the length of side BC. |
A) \$ \sqrt187 \$ B) \$ \sqrt197 \$ C) \$ \sqrt193 \$ D) \$ \sqrt183 \$ |
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