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Flag Trigonometry> SOLVE : cos[sin^(-1) (2/5) + cos^(-1) (x)...
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SOLVE : cos[sin^(-1) (2/5) + cos^(-1) (x)] = 0
plz give stepwise solution

vinod , 8 Years ago
Grade 12
anser 1 Answers
moumi roy

Last Activity: 8 Years ago

given:cos[sin^(-1) (2/5) + cos^(-1) (x)] = 0
cos[sin^(-1) (2/5) + cos^(-1) (x)]=cos[(pi)/2]
sin^(-1) (2/5) + cos^(-1) (x)=(pi)/2
so,x=(2/5)
as sin^(-1) (A) + cos^(-1) (A)=(pi)/2

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