Prove sin^2(pi÷8+a)-sin^2(pi÷8-a)=√2÷2sin 2a me,

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step-by-step explanation:

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

1 and 0

step-by-step explanation: