prove that cosx(tanx+2)(2tanx+1)=2secx+5sinx

prove that cosx(tanx+2)(2tanx+1)=2secx+5sinx
1. 2 answers
2. asked by krishan
3. 1,929 views
Prove :cosx-cosy= -2sin(x+y/2)sin(x-y/2)Prove: 2cot-2tanx= 4-2sec^2x / tanx
1. 1 answer
2. asked by Sarah
3. 921 views
Trigonometric IdentitiesProve: (tanx + secx -1)/(tanx - secx + 1)= tanx + secx My work so far: (sinx/cosx + 1/cosx +
1. 0 answers
2. asked by Dave
3. 1,424 views
How do I prove these trig identities?secx-cosx/tanx =sinx And 1+sinx/cosx+ cox/ 1+sinx=2secx
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2. asked by Jill
3. 917 views
1/tanx-secx+ 1/tanx+secx=-2tanxso this is what I did: =tanx+secx+tanx-secx =(sinx/cosx)+ (1/cosx)+(sinx/cosx)-(1/cosx)
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2. asked by olivia
3. 1,308 views
1. Prove the identity:cosx/1-tanx+sinx/1-cotx=sinx+cosx2.Prove the identity: cosx/1+sinx+1+sinx/cosx=2secx
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2. asked by Aliya
3. 612 views
Prove the following identity:1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake
1. 1 answer
2. asked by Heather
3. 765 views
Simplify #3:[cosx-sin(90-x)sinx]/[cosx-cos(180-x)tanx] = [cosx-(sin90cosx-cos90sinx)sinx]/[cosx-(cos180cosx+sinx180sinx)tanx] =
1. 1 answer
2. asked by Anonymous
3. 1,054 views
How do I solve these?1) 2sinxcosx-cosx=0 2) cos^2(x)-0.5cosx=0 3) 6sin^2(x)-5sinx+1=0 4) tan^2(x)+tanx-12=0
1. 2 answers
2. asked by .
3. 1,795 views
find the derivative of the functions F(x)= tan^2(x) and G(x) = sec^2(x).... based on your calculations what can you say about
1. 1 answer
2. asked by Anonymous
3. 335 views