alleryएक न्यून कोण का sine 5/13 है। इसका cosine ज्ञात कीजिए।
A5/12
B8/13
C13/12
D12/13
Answer & Solution
Correct answer: D. 12/13
cos θ = √(1 - 25/169) = √(144/169) = 12/13 है।
Keep practising Geometry and Trigonometry
Browse all Geometry and Trigonometry questions for RRB NTPC, or explore more Mathematics topics.
Related questions
RRB NTPC · Trigonometric RatiosRRB NTPC · Triangle CentersRRB NTPC · Classify Angle TypesRRB NTPC · Match Trigonometric ValuesWhich line segment connects two points on a circle and divides it into two segments?When does the sum of two side lengths equal the third side?What total measure in degrees do the two non-right angles of a right triangle add up to?What geometric shape is the planar region bounded by two concentric circles?