Question

transformação trigonométrica​

Answer 1

s = co / h

cos = ca / h

tg = co / ca

co / h = 35 / 37

ca / h = 12 / 37

co / ca ≈ 35 / 12

b.

cos (26) = cos 71 × cos 45 + sen 71 × sen 45

assim,

• cos 26 = (6√2 / 37) + (35√2 / 74)
• cos 26 = 47√2 / 74