using exact values, find the value of: sin 2A + 3A /2 cos A + sec ( A + 15^o ), when A =30 ^ o?

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using exact values, find the value of: sin 2A + 3A /2 cos A + sec ( A + 15^o ), when A =30 ^ o?

this is plane trigonometry

2007-03-09 10:05:41 · 3 answers · asked by allbraindead2 1 in Science & Mathematics ➔ Geography

3 answers

How exactly does having the Y! answers community do your homework help you learn this for the test? It just seems like you're setting yourself up for failure.

But hey, don't let me stop you. You'll figure this life lesson out soon enough.

2007-03-13 05:13:31 · answer #1 · answered by yoericd 3 · 0⤊ 0⤋

hi

nice sintax

2A + 3A = 5A = 150*
sin(150*)=sin(30*) = 1/2
cos(A) = V3/2
a + 15* = 45*
sec(45*) = V2

finally
(1/2)/(2*V3/2) + V2
= 1/2V3 + V2
= (1 + 2V6) / 2V3

bye

2007-03-09 18:37:03 · answer #2 · answered by railrule 7 · 0⤊ 0⤋

and Geography is a spatial science.

2007-03-09 20:26:00 · answer #3 · answered by Jennifer B 3 · 0⤊ 0⤋