find the
Sign of expression sin 100°+ cos 100°
Answers
Answered by
0
Answer:
sine 100 gradians is 1. cosine 100 gradians is 0. So sin 100 + cos 100 = 1.
Step-by-step explanation:
Answered by
0
Step-by-step explanation:
sin100
o
+cos100
o
=
2
(
2
1
sin100
o
+
2
1
cos100
o
)
=
2
(cos45
o
sin100
o
+sin45
o
cos100
o
)
=
2
sin145
o
∵0<145
∘
<180
∘
∴ sin145
∘
is positive
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