Verify that, cos 60º = cos² 30º - sin² 30° = 1/2
Answers
Answered by
0
Answer:
by 2sin A formula solve
mark as brainliest
Answered by
0
Answer:
tan
2
30°.sin30°+cos60°.sin
2
90°tan
2
60°−2tan45°.cos
2
0°.sin90°
=(
3
1
)
2
.
2
1
+
2
1
×1×(
3
)
2
−2×1×1×1
=
6
1
+
2
3
−2
=
6
1+9−12
=
6
−2
=
3
−1
Hence, the answer is
3
−1
.
Similar questions