Question

if sin a= 1/ root 2, cot b= 1, prove that sin( a+ b) = 1​

Answer 1

Answer:

$sina = \frac{1}{ \sqrt{2} } \\ a = 45 \\ \\ cotb \: = 1 \\ b = 45 \\ \\ now \: sin(a + b) = sin(45 + 45) = sin90 = 1$

Hence proved

Answer 2

Answer:

this is correct..........................