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What value of a makes sind = cos 20° a true statement? A) 25° B) 70° C) 100° D) 110°

What value of a makes sind = cos 20° a true statement? A) 25° B) 70° C) 100° D) 110°
asked 15.6k views
4 votes
What value of a makes sind = cos 20° a true statement?

A)
25°
B)
70°
C)
100°
D)
110°

What value of a makes sind = cos 20° a true statement? A) 25° B) 70° C) 100° D) 110°-example-1
asked
User Lexicore
by
8.4k points

1 Answer

6 votes
b)70 because sina=cos(90-a)
answered
User Alexey Grigorev
by
8.5k points
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