# Trigonometry and Trigonometry Formulas Multiple Choice Questions Test 7 pdf Download

Practice math quiz 7 on trigonometry and trigonometry formulas MCQs, grade 8 trigonometrical ratios multiple choice questions. Free trigonometrical ratios guide has math worksheet with answering options 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 exam prep. Study to learn trigonometrical ratios quiz to attempt multiple choice questions based test.

## MCQs on Trigonometry and Trigonometry Formulas - Quiz 7

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

- 21° , 170.32°
- 18.02° , 165.02°
- 14° , 150°
- 13.80° , 166.20°

D

MCQ. Formula for area of a triangle ABC is

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

B

MCQ. In Δ ABC, angle A = 110° and AC = 2AB. If area of Δ ABC is 15.5 cm^{2} then length of AB is

- 3.06 cm
- 6.05 cm
- 4.06 cm
- 5.06 cm

C

MCQ. Considering Cosine rule, cos C is equal to

- a
^{2}- b^{2}- c^{2}⁄2bc - 2a
^{2}+ 2b^{2}+ 2c^{2}⁄2abc - a
^{2}+ b^{2}- c^{2}⁄2ab - 2a + 2b - 2c⁄2ac

C

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

- 2.4
- 2.8
- 3.2
- 0.8

A