Question

6. If x = a sin 0+ b cos 0 and y = a cos 0 - b sin 0 then find the value of x + y?.
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Answer 1

Step-by-step explanation:

sin 0 = 0

cos 0 = 1

Hence x = a × 0 + b × 1

y = a × 1 + b × 0

we get x = b , y = a

Therefore x + y = a + b

or x + y = b + a