Question

sinA =3/5 the value of 1-cos²A is​

Answer 1

Answer:

o is the rational number that is equal to its negative.

Step-by-step explanation:

yes it is equal

Answer 2

Step-by-step explanation:

Answer

Correct option is

B

1

(10)

sinA=

5

3

, A∈Q

2

⇒cosA=−

5

4

Then,

2cos

2

2

A

−1=cosA

⇒2cos

2

2

A

−1=−

5

4

⇒2cos

2

2

A

=1−

5

4

=

5

1

⇒cos

2

2

A

=

10

1

(∵asA∈Q

2

,

2

A

∈Q

1

)

∴cos

2

A

=+

10

1

.