Question

यदि sin B= 1/2
हो, तो दिखाइए कि
3 cos B - 4 cos B=0​

Answer 1

Answer

Cos B = 3/1 = b/h

Cos B = 4/1 = b/h

Cos B - Cos B = 0

3/1 - 4/1

= -1/1

=0

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