Cos(pie / 2 - 30 degree) is equal to
A) 1/ root 3
B)1/ root 2
C)1 /2
D)root 3/2
Answers
Answered by
1
Answer:
Step-by-step explanation:
π/2=90deg
π/2-30deg = 90-30=60
Since Cos(60)=1/2, answer = C)1/2
Answered by
1
Answer:
c
Step-by-step explanation:
π/2 means 90°
therefore cos(90-30)°=
sin30° . as function of trigonometry changes when angle is showed with help of y axis
hence
sin30=1/2 so c is answer
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