Question

if A=60° verify that (with steps)
1)sin²A+cos²A=1
2) sec²A- tan²A=1 ​

Answer 1

Answer:-

1) sin²A+cos²A=1

Taking L.H.S

sin²60+cos²60

=(√3/2)²+(1/2)²

=3/4+1/4

=4/4

=1

So,

L.H.S=R.H.S

1=1

2) sec²A-tan²A

Taking L.H.S

= (2)²-(√3)²

=4-3

=1

So,

L.H.S=R.H.S

1=1

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