Question

if cos 25° + sin25° = p then cos 50° is
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Answer 1

Answer:cos50=2(1-sin25)

as we know that:

cos(x)+sin(x)=1

so,cos25+sin25=p

where p will be 1

on multiplying 2 on both sides of the equation we get

2(cos25)=2(1-sin25)

hence,cos50=2(1-sin25)

I hope this answer is correct and helpful 2 u!