## imqwerty one year ago Sin(20)(4+sec(20)) value?

1. butterflydreamer

have you tried or started yet? :)

2. butterflydreamer

some helpful hints that you'll need to use: $\sec 20 = \frac{ 1 }{ \cos20 }$ You'll probably also need to use this one: $\sin2x = 2sinxcosx \rightarrow 2\sin2x = 4sinxcosx$ Lastly, recall that you'll be using exact values here so you'll need this: |dw:1436160583596:dw|

3. imqwerty

:) Thanks a lot, I was doing aa very silly mistake while solving it.

4. butterflydreamer

nooo problem :)!

5. imqwerty

My gonna post an awesome question. Wait..