Question

without using the trigonometry table find (sin47°/cos43°)² + (cos45°/sin47°)²​

Answer 1

Answer:

cos ( 60° )

Step-by-step explanation:

2 tan30°=

_______

1+tan²30° = cos60°

Answer 2

Step-by-step explanation:

[sin47°/cos(90°-47°)]²+[cos45°/sin(90°-45°)]²

(sin47°/sin47°)²+(cos45°/cos45°)²

(1)²+(1)²

1+1

=2