Practice trigonometry and trigonometry formulas MCQs, grade 8 online math test 7, trigonometrical ratios multiple choice questions and answers. Trigonometrical ratios revision test has math worksheets, helping answer key with choices as 18.02° , 165.02°, 21° , 170.32°, 14° , 150° and 13.80° , 166.20° of multiple choice questions (MCQ) with trigonometrical ratios quiz as considering 0° < x < 180°, angle of sin x = 0.2385 is for competitive exam prep, viva interview questions. Free math study guide to practice trigonometrical ratios quiz to attempt multiple choice questions based test.

## MCQs on Trigonometry and Trigonometry Formulas Quiz PDF Download Worksheets 7

MCQ. Considering 0° < x < 180°, the angle of sin x = 0.2385 is

1. 21° , 170.32°
2. 18.02° , 165.02°
3. 14° , 150°
4. 13.80° , 166.20°

D

MCQ. The formula for the area of a triangle ABC is

1. 1/2ab sin C + 1/2bc sin A + 1/2ac sin B
2. 1/2ab sin C = 1/2bc sin A = 1/2ac sin B
3. 3/2ab sin C = 3/2bc sin A = 3/2ac sin B
4. 2ab sin C = 2bc sin A = 2ac sin B

B

MCQ. In Δ ABC, angle A = 110° and AC = 2AB. If the area of Δ ABC is 15.5 cm² then the length of AB is

1. 3.06 cm
2. 6.05 cm
3. 4.06 cm
4. 5.06 cm

C

MCQ. Considering the Cosine rule, the cos C is equal to

1. a² - b² - c²⁄2bc
2. 2a² + 2b² + 2c²⁄2abc
3. a² + b² - c²⁄2ab
4. 2a + 2b - 2c⁄2ac

C

MCQ. If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is

1. 2.4
2. 2.8
3. 3.2
4. 0.8

A