if cos A =1/root 2,cot B = 1 find the value of sin(A+ B)
Asked by honey_physics | 16th Feb, 2010, 10:49: AM
Expert Answer:
cos A = 1/
2 = cos45o
A = 45o
cot B = 1= cot45o
B = 45o
So, sin (A+B) = sin(45 + 45)o
Hence, sin 90o = 1
Answered by | 16th Feb, 2010, 11:26: AM
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