Sin (90°-A) COSA+ Sin A cos (90°- A)
Answers
Answered by
1
sin(90°-A)(cosA) + sinA(cos(90°-A))
=cosA(cosA)+sinA (sinA)
=cos^2A+sin^2A
=1
Answered by
1
Step-by-step explanation:
Sin(90°-A)*CosA + Cos(90°-A)*SinA
{ SinA*CosB + CosA*SinB = Sin(A+B) }
Sin( 90° - A + A )
Sin(90°)
= 1
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