Question

17. यदि cost-cos[90° -0)=0,तो का मान ज्ञात कीजिये।
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Answer 1

Step-by-step explanation:

cost-cos[90°-0]=0

cost-sin0=0 {cos(90°-x)=sinx}

cost-0=0 {sin0=0}

cost=0

cost=cos90° {cos90°=0}

t=90°