The value of the expression Tan^2 20° – sin^220°/ Tan^2-20°.sin^2 20°
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2
Answer:
1
Step-by-step explanation:
tan
2
20
0
−sin
2
20
0
=
cos
2
20
0
sin
2
20
0
sin
2
20
0
cos
2
20
0
sin
2
20
0
−sin
2
20
0
=
sin
4
20
0
sin
2
20
0
−sin
2
20
0
cos
2
20
0
=
sin
4
20
0
sin
2
20
0
(1−cos
2
20
0
)
=
sin
2
20
0
sin
2
20
0
=1
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