The value of the angle 80° in radian is (A) 4π

The value of the angle 80° in radian is

(A) 4π

(B) \(\frac{1}{9}\)π

(C) \(\frac{2}{9}\)π

(D) \(\frac{4}{9}\)π

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct option is: (D) \(\frac{4}{9}\)π

5 views Answered 2023-02-05 15:29

Related Questions

Assertion: The angle between the two vectors `(hati+hatj)` and `(hatj_hatk)` is `(pi)/(3)` radian. Reason: Angle between two vectors `vecA` and `vecB`

2 Answers 5 Views

Limiting angle of a prism is defined as the largest angle of the prism (A) for which no emergent ray is obtained. (a) Find the limiting angle `(A_(0))

2 Answers 5 Views

If r = 10 cm, l = 20 cm, then the value of θ (in radian) is

2 Answers 4 Views

The critical angle for a certain wavelength of light is glass is `40^(@)`. Calculate the polarising angle and the angle of refraction in glass corresp

2 Answers 5 Views

For a ray of light refracted through a prism of angle `60^(@)`, the angle of incidence is equal to the angle of emergence, each equal to `45^(@)`. Fin

2 Answers 6 Views

The refractive index of the material of a prism of `60^(@)` angle for yellow light is `sqrt(2)`. Calculate angle of minimum deviation, angle of incide

2 Answers 5 Views

A ray of light is incident on the glass prism at an angle of `40^(@)`. Find the angle of emergence, if the angle of prism is `60^(@)` and refractive i

2 Answers 8 Views

Convert the angle from degree to radian : `{:((a)" "30^(@),(b)" "45^(@)),((c)" "60^(@),(d)" "90^(@)),((e)" "120^(@),(f)" "135^(@)),((g)" "210^(@),(h)"

2 Answers 5 Views

Convert the following angle from radian to degree `{:((a)(pi)/(4)"red",(b)(pi)/(6)"rad"),((c)(pi)/(3)"rad",(d)(3pi)/(4)"rad"),((e)(7pi)/(6)"rad",(f)(5

2 Answers 5 Views

If the angles of a triangle are in the ratio 1:2:3, then the smallest angle in radian is

2 Answers 5 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)