its complicated can u help
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tan (A+B) = 1/2 + 1/3 over 1- 1/2*1/3
= 5 /6 over 1-1/6
= 5/6 over 5/6
= 5/6 * 6/5
= 1
but
tan 45° = 1
so A + B = 45°
Now put it in sin ²(A + B). + cos²(A + B)
sin² 45° + cos²45°
( 1/√2 )² + (1/√2)²
1/2 + 1/2
2/2
1 ......
= 5 /6 over 1-1/6
= 5/6 over 5/6
= 5/6 * 6/5
= 1
but
tan 45° = 1
so A + B = 45°
Now put it in sin ²(A + B). + cos²(A + B)
sin² 45° + cos²45°
( 1/√2 )² + (1/√2)²
1/2 + 1/2
2/2
1 ......
raminder1:
welcome
It's 10th standard question .... right....
oohh nooo it's 11th question .... right....
may b
hmm hmm
Okay
11
no its 10th class qustion
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