non-square rhombus ABCD is 7:5, then the value of the ∠C is?
A65˚Correct AnswerIncorrect Answer
B105˚Correct AnswerIncorrect Answer
C55˚Correct AnswerIncorrect Answer
D75˚Correct AnswerIncorrect Answer
Solution
Ratio of ∠A and ∠B is 7:5 (∠A)/(∠B) = 7/5 In rhombus, ∠A + ∠B = 180˚ Let the angles be 7x and 5x Then, 7x + 5x = 180 X = 180/12 = 15˚ A = 7 × 15 = 105˚ ∠A = ∠C = 105˚