Verified answer

Refer to the figure ----

Apply sine rule --

=> a / sin A = b / sin B = c / sin c . We will consider

=> b / sin B = c / sin c

=> ( 5/sin 2x ) = ( 4 / sin x )

=> [ 5 / (2.sinx.cos x ) ] = ( 4 / sin x )

=> [ 5 / 2 cos x ] = 4

=> cos x = ( 5 / 8 )

=> x = cos⁻¹ ( 5 / 8 ) = 51.3° .................. Answer Answer

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The notice is "coordinates" and that i do no longer see a c. Did you bypass over some thing? additionally you have too many equivalent signs and indicators for Line a million and a couple of. replace "=" by way of it suited verb "is" or yet another word that states your purpose. For, occasion: The equation for a line that passes by way of (2, 2) with slope a million/7 is ... With such distinctive equivalent signs and indicators it gets complicated. in basic terms like English, arithmetic has its language, study to apply it and you may no longer be as puzzled.

Is it a right-angled triangle?