What will be the value of sin 105 + cos 105
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sin105 + cos105
sin(60+45) + cos(60+45)
now applying sin(A+B) and cos(A+B)
(sin60×cos45 + cos60×sin45) +(cos60×cos45 - sin60×sin45)
After this you can do like that donein the pic
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cr7msd7:
How did u brought negative sign
cos(A+B)= CosA×CosB- SinA×SinB
ya ya I got it
Oh I hv nt saw it earlier
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