# Multiple Choice Questions and Answers on Trigonometry and Trigonometry Formulas Quiz 6 Download PDF

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"Considering the Cosine rule, the a² + c² - b²⁄2ac is equal to" Multiple Choice Questions (MCQ) on trigonometry and trigonometry formulas with choices *cos a, cos b, cos d, and cos c* for distance learning. Free math study guide for online learning three dimensional problems quiz questions for elementary school graduation certificate.

## Trigonometry and Trigonometry Formulas MCQs Quiz 6 Download PDF

MCQ: Considering the Cosine rule, the a² + c² - b²⁄2ac is equal to

- cos B
- cos A
- cos D
- cos C

A

MCQ: In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then the lengths of a and b are

- a = 9.88 cm, b = 7.72 cm
- a = 10.32 cm, b = 8.23 cm
- a = 11.35 cm, b = 6.82 cm
- a = 8.96 cm, b = 6.85 cm

A

MCQ: In the triangle ABC, if angle A = 89°, b = 13.5 cm and a = 17 cm then angle B is

- 68°
- 62°
- 58°
- 52.6°

D

MCQ: The number of dimensions a point can have is

- zero
- infinite
- one
- negative

D

MCQ: The flat surface like the blackboard is classified as

- vertex plane
- triangular plane
- trigonometrical plane
- plane

D