If a and b measures of two first quadrant angles and sin⁡〖a= 4/9〗 and sin⁡〖b= 2/5〗 find sin⁡(a+b).

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

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answer: c. im 100 percent sure

step-by-step explanation: