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ok

so the middle Angle=90°{Given}

So ,

180°- 90°=90°

Hence,

S= 180°-(58+4)

S=180°- 62

S=118°

S-4=114°

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.