Time remaining:
I need to find the solutions in radians

label Mathematics
account_circle Unassigned
schedule 0 Hours
account_balance_wallet $5

28 sin^2-3 sin-1=0

Apr 12th, 2015

Let x = sinx

then,

28x^2 - 3x - 1 = 0

(7x + 1) (4x - 1) = 0

7x + 1 = 0

7x = -1

x = -1/7

4x - 1 = 0

4x = 1

x = 1/4

Then,

sinx = -1/7

x = pi + 0.1433 = 3.285 rad

x = 2pi - 0.1433 = 6.140 rad

sinx = 1/4

x = 0.253 rad

x = pi - 0.253 = 2.889 rad

Therefore,

x = 0.253, 2.889, 3.285, 6.140

Apr 11th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Apr 12th, 2015
...
Apr 12th, 2015
Jun 29th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer