If sin α + sin β = cos α + cos β = 1 , then sin α + cos α = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 1
The value of α and β from the above eqn we can say be either 0 or 90 vice versa
thus putting the values in the eqn we will get
sin 90 + cos 90 = 1
sin 0 + cos 0 = 1