Question

16.
If sin square A = 0, then find the value of cos A.​

Answer 1

Answer:-

Given:-

• Sin²A = 1

To find:-

• The value of cos A

Solution:-

Here sin² = 0

Sin²A + cos²A = 1

( 0 )² + cos²A = 1  (Here, the value of sin²A = 0)

cos²A = 1 - 0

cos²A = 1

cos A = √1

cos A = 1

Therefore, The value of cos A = 1

Answer 2

Answer:

The value of Cos A is +/-1

Step-by-step explanation:

Given that

Sin²A=0

Sin²A=0Cos²A=?

We know that,

Sin²A+Cos²A=1

Putting the values of Sin²A=0, we get

0+Cos²A=1

0+Cos²A=1Cos²A= 1

0+Cos²A=1Cos²A= 1CosA=√1

0+Cos²A=1Cos²A= 1CosA=√1CosA=+/-1

Conclusion:

If sin² A = 0, then the value of Cos A is +/-1.