If sin a -sin-0-cos a -cos- where 0- a -2 - then which one of the following is correct-a a - -b a - Bc a -2 -d 2 a -2 -

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If sin a +sin...

Question

If sin a +sinß =0= cos a+cos ß, where 0<ß<a<2π, then which one of the following is correct?

a) a = π - ß

b) a = π + ß

c) a = 2π - ß

d) 2a = π + 2ß

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