happyjacobemmanuel happyjacobemmanuel 21-05-2023 Mathematics contestada 2.3 If 8 tan A + 15 = 0 and A E [90°; 270°], WITHOUT using a calculator and with the aid of a diagram determine the value of the following: 2.3.1 sin²A + cos² A 2.3.2 34 sin A - 17 cos A
