Question

sin 18 degree by cos 72 degree

Answer 1

sin 18 degree by cos 72 degree....HERE U GO,

Sin18/cos72

sin18/sin(90-72)

sin18/cos18

tan18

Answer 2

Answer:

»» 1

Step-by-step explanation:

sin18°/cos72°

= cos(90° - 18)/ cos 72°

{ °•° cos 90°- θ = sin θ }

= cos 72°/cos 72°

= 1

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