Introduction To Trigonometry
> Question
VSA
2 marks
Year: 2020
Medium
CBSE Class 10
trigonometry
complementary-angles
standard-values
Question
Evaluate:
(
cos
43°
sin
47°
)
2
+
(
cot
30°
cos
30°
)
2
−
(
sin
60°
)
2
Solution
1
(
c
o
s
43°
c
o
s
(
90°
−
47°
)
)
2
+
(
3
2
3
)
2
−
(
2
3
)
2
=
1
+
4
1
−
4
3
=
2
1
+2 marks
Practice this question interactively with step-by-step AI feedback
Sign up for SuperPadhai