Start learning →

Convert 40°20′ to radian measure.

A121π/270 radian
B40π/100 radian
C40π/180 radian
D121π/540 radian
Answer & Solution
Correct answer: D. 121π/540 radian
40°20′ = 40 + 20/60 = 40 + 1/3 = 121/3 degrees. Multiply by π/180: (121/3) × (π/180) = 121π/540 radians.
Practise this question with Quill — AP Intermediate 1st Year →

Keep practising Trigonometric Functions

Browse all Trigonometric Functions questions for AP Intermediate 1st Year, or explore more Mathematics topics.

Start a Trigonometric Functions lesson →
Related questions
Trigonometry bingoKnock out the true statementsWhich ones belongSpot the false statementWhich way does it turnWhich one does not belongSine and cosineOrder the build up