Question

If sin = 0.3970 use the tables to find (i) cos (ii) tan

Answer 1

Answer:

Explanation

(a) Given sinα=0.3907sin⁡α=0.3907

From the sine table, α=23°α=23°

(i) tanα=tan23°=0.4245tan⁡α=tan⁡23°=0.4245

(ii) cosα=cos23°=0.9205