Answer:
Explanation:
cos theta=4/7
so here adjacent=4 ,hypotenuse=7 ,opposite=?
h^2=p^2+b^2
7^2=(4 )^2+b^2
49-32=b^2
=b
sin theta=opposite/hypotenuse
=/7
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/7 ,hypotenuse=7 ,opposite=? )^2+b^2
=b
/7