if A + B = 90⁰ and A = 2B then cos2 A + sin2 B equal (pls send pic)
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2b+b=90
3b=90
b=30°
a=60°
cos^2a+sin^2b
cos^260°+sin^230°
1/2^2+1/2^2
1/4+1/4
= 1/2
3b=90
b=30°
a=60°
cos^2a+sin^2b
cos^260°+sin^230°
1/2^2+1/2^2
1/4+1/4
= 1/2
Answered by
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