Sinα=cos(90-α) this is an identity which you need to know...
in this case:
sin49°=cos41°
Answer: The answer is 4. 7+(-3) is like 7 minus 3.
Step-by-step explanation:
Answer:
infinite
Step-by-step explanation:
Let the linear equation in two variables be ax+by+c=0
Put values


Hence for any values it has infinite number of solutions .
including x=1 and y=3