1.

i2 In the given fig.Sin A= , find cos A.4

Answer»

sin A = 3/4

cos²A + sin²A = 1

cosA = √ (1 - sin²A)

cos A = √ ( 1 - (3/4)²

cos A = √( 16 - 9)/4²

cos A = √7/4



Discussion

No Comment Found