Question

Fill in the blanks sin20º = cos( ) degree​

Answer 1

Answer:

sin20°

= sin(90° -70°)

= cos70°

since , sin(90° - ß) = cosß

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Answer 2

Answer:

sin 20° = cos (90° – 20°) ...[∵ sin θ = cos(90 – θ)] = cos 70°

Step-by-step explanation:

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