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CBSE Class 10 Answered

if cos A =1/root 2,cot B = 1 find the value of sin(A+ B)
Asked by honey_physics | 16 Feb, 2010, 10:49: AM
answered-by-expert 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 | 16 Feb, 2010, 11:26: AM

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