What is the measurement of angle A?

∠A  = tan⁻¹ (35/12) ≅  71.075 ° or 1.24 radians

Step-by-step explanation:

Since this is a right angled triangle, then we can use basic trigonometry to solve for ∠A.

We have the measure of the  side opposite (35) and adjacent (12) to ∠A.

Since tan(x) = opp/adj

 then tan (∠A) = 35/12

              ∴ ∠A  = tan⁻¹ (35/12)     [by taking the tan⁻¹ of both sides of the eq]

                  ∠A ≅ 71.075 ° or 1.24 radians

b. 2 and 4

step-by-step explanation: