engineering recuitment NFC Chemical Plant Operator Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sum of the diagonals of a quadrilateral is 18 cm and their difference is 2 cm. Then find the angle between diagonals if area of quadrilateral is 20√3 cm2.
1
70°
2
90°
3
120°
4
150°