If cos f° = four ninths and the measure of segment XW is 16 units, what is the measure of segment XY?

D. 36 units

Step-by-step explanation:

The description of the triangle is:

triangle XYW in which angle W is a right angle, angle X measure f degrees, and angle Y measures d degrees

Therefore, side XY is adjacent to f and side XY is the hypotenuse

From definition:

cos(f) = adjacent/hypotenuse

Replacing:

cos(f) = XW/XY

4/9 = 16/XY

XY = 16*9/4

XY = 36 units

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

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