Question

Find the values of sine cosine and tangent for angle A

Answer 1

• Option A

Explanation:

Find the length of AB:

• AB =
  `√(7^2+4^2) =√(65)`

Now as we know:

sine = opposite / hypotenuse

• sin A = 4/
  `√(65)` = 4
  `√(65)`/65

cosine = adjacent / hypotenuse

• cos A = 7/
  `√(65)` = 7
  `√(65)`/65

tangent = opposite / adjacent

• tan A = 4 / 7

Correct choice is A