sin^20*+sin^70*=1* is this correct statement. give reasons
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No because value of sin 20 and sin70 cannot be added to get 1
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heya,
sin^20°+sin^70°=1.
from lhs,
cos^70°+sin^70°=1(【sin^(90°-70°)=cos^20°
so Lhs=Rhs=1. (sin^2a+cos^2a)=1
so this statement is correct .
hope it help you
@rajukumar.
sin^20°+sin^70°=1.
from lhs,
cos^70°+sin^70°=1(【sin^(90°-70°)=cos^20°
so Lhs=Rhs=1. (sin^2a+cos^2a)=1
so this statement is correct .
hope it help you
@rajukumar.
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