Question

(ii) If sin (x + y) = 1, cos (x - y) =
and x > y,0°; 5x + y s 90° then find x and y.​

Answer 1

Step-by-step explanation:

sin(x+y) =1

cos(90-(x+y))=1

cos(90-x-y)=1

cos(90-x-y)=cos(x-y)

90-x-y=x+y

2(x+y)=90

x+y=45

5x+y=90

-4x=-45

4x=45

x=45/4

=11.25

y=33.75

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