Question: Can I please get help with this one, thank you. Given that sin(a) = _ and cos(b) - with a and b both in the

Can I please get help with this one, thank you.

Given that sin(a) = _ and cos(b) - with a and b both in the interval ", " ), find the exact values of sin(a + b) and cos(a - b). sin(a + b) cos(a - b)=

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