Whats the question tell me and i'll try to help
Its B , 6 because if you subtract 98 from 530 you get 432 and if you divide that by 72 you get 6 :)
3/5 / 3/7
= 3/5 * 7/3
= 7/5 or 1 2/7
Trig ratios can only be used on right triangles with acute measures.
If given an angle and there are adjacent and opposite sides, then use tan(opposite/adjacent)
If given an angle and there is an adjacent side and a hypotenuse, then use cosine(adjacent/hypotenuse)
If given an angle and there is an opposite and adjacent side, then use sin(opposite/hypotenuse)
A common mnemonic device used to memorize the trig rules is SOH-CAH-TOA
by angle sum property of triangle,
70+60+(x+60)=180
=> 190 +x = 180
=> x = 180-190
=> x = -10
