Home › SSC CGL › Quantitative Aptitude › geometry_trigonometry_mensuration › If sin(theta) = 3/5, then cos(theta) is (theta a…
If sin(theta) = 3/5, then cos(theta) is (theta acute)
A4/5
B5/4
C2/5
D3/4
Answer & Solution
Correct answer: A. 4/5
cos^2 = 1 - sin^2 = 1 - 9/25 = 16/25. So cos = 4/5 (positive since acute). Classic 3-4-5 triangle.
Related questions
The line 2x + 3y = 12 has y-interceptThe midpoint of segment joining (2, 3) and (6, 7) isIf sin(theta) + cos(theta) = sqrt(2) and theta is acute, then theta isThe distance between points (3, 4) and (0, 0) isIf sin(theta) + cos(theta) = sqrt(2), then sin(theta) isA pole is broken at a height. The broken part touches ground 10 m from the foot at an anglFrom a point 30 m away from the foot of a tower, the angle of elevation of the top is 45 dIf sec(theta) = 5/4, then tan(theta) is