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 2 years ago
Given that sin pie/6 = 1/2, use an equivalent trigonometric expression to show that cos= 1/2. I have no clue how to do this, can someone help me?
 2 years ago
Given that sin pie/6 = 1/2, use an equivalent trigonometric expression to show that cos= 1/2. I have no clue how to do this, can someone help me?

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LoveUu
 2 years ago
Best ResponseYou've already chosen the best response.1sin 30*=1/2 cos60*=1/2 u can see trignometric table for this and all for all values also

sabika13
 2 years ago
Best ResponseYou've already chosen the best response.1i dont understand.. can you do it step by step

LoveUu
 2 years ago
Best ResponseYou've already chosen the best response.1If cos x = 1/2 then x = cos^(1) (1/2) therefore, x = 60 degrees , 300 degrees {where x is greater than or equal to 0 and lesser than or equal to 360} or pi/3 radians, 5pi/3 radians {where x is greater than or equal to 0 and lesser than or equal to 2pi}

sabika13
 2 years ago
Best ResponseYou've already chosen the best response.1okay.. so we do not need to use trigonometric identities?

sabika13
 2 years ago
Best ResponseYou've already chosen the best response.1the trig identities chart*

sabika13
 2 years ago
Best ResponseYou've already chosen the best response.1i think its okay.. i basically just solve sinx and cosx?
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