A level math... help
sin (4x) = cos (2x)
from -180 to 180
How do you solve this!
The answers are
-165, -135, -105, -45, 15, 45, 75, & 135
I keep getting some of the answers but not all of them.
I tried so hard my head hurts 😂
Please give a step by step solution and explain as you go.
from -180 to 180
How do you solve this!
The answers are
-165, -135, -105, -45, 15, 45, 75, & 135
I keep getting some of the answers but not all of them.
I tried so hard my head hurts 😂
Please give a step by step solution and explain as you go.
Original post by raghadgamil
sin (4x) = cos (2x)
from -180 to 180
How do you solve this!
The answers are
-165, -135, -105, -45, 15, 45, 75, & 135
I keep getting some of the answers but not all of them.
I tried so hard my head hurts 😂
Please give a step by step solution and explain as you go.
from -180 to 180
How do you solve this!
The answers are
-165, -135, -105, -45, 15, 45, 75, & 135
I keep getting some of the answers but not all of them.
I tried so hard my head hurts 😂
Please give a step by step solution and explain as you go.
Its best to post your attempt, but it should be fairly straightfoward to use the double angle formula for sin(4x) and then factorise/solve.
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