Question

If sin20=cos30 Then find the value of o

Answer 1

Answer:o=18°

Step-by-step explanation:sin2o=cos 3o

(Since sin (90°-a)=cosa)

Sin 2o=sin(90°-3 o )

Remove sin botheta sides then we get,

2o=90°-3o

2o+3o=90°

5o=90°

o=90°/5=18°

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