Question

if sinA- cosecA=5 then what is the value of sin^2A+cosec^2A?
1) 23
2)25
3)27
4)12

Answer 1

Answer:

sinA+cosecA=2

Squaring both sides, we get

⇒(sinA+cosecA)

2

=4

⇒sin

2

A+cosec

2

A+2=4

⇒sin

2

A+cosec

2

A=2

Hence, the answer is 2