Math, asked by titankingx7, 9 months ago

Assertion (A): cos20° - sin20° > 0
Reason (R): If theta belongs to R , cos theta - sin theta > 0
a) Both A and R are correct and R is correct explanation of A
b) Both A and R are correct and R is not correct explanation of A
c) A is correct, R is incorrect
d) A is incorrect, R is correct​

Answers

Answered by CyberSquad
1

Answer:

Step-by-step explanation:

Multiplying by r, the given equation become r  

2

=∣rcosθ∣    ...(1)

In Cartesian form equation (1) can be written as x  

2

+y  

2

=∣x∣

⇒x  

2

+y  

2

=+x if x>0

and x  

2

+y  

2

=−x if x<0

Equation (2) represents a circle of radius  

2

1

​  

 and  centered at (  

2

1

​  

,0).

Equation (3) represents a circle of radius  

2

1

​  

 and centered at (−  

2

1

​  

,0).

Hence, the given equation represents two circles touching each other at the origin.

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