" Exact value of "cos20^(@)+2sin^(2)55^(@)-sqrt(2)sin65^(@)" is - "

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Q.exact value of cos20^(@)+2sin^(2)(55)^(@)-sqrt(2)sin65^(@)

cos20^(@)+2sin^(2)55^(@)-sqrt(2)sin65^(@) is equal to

cos20^(@)+2sin^(2)(55)^(@)-sqrt(2)sin65^(@) is equal

The value of cos 20^(@)+2sin^(2)55^(@)-1-sqrt(2)sin65^(@) =

Exact value of cos 20^0+2sin^2 55^0-sqrt(2)sin65^0 is- a.1 b. 1/(sqrt(2)) c.sqrt(2) d. zero

Exact value of cos 20^0+2sin^2\ \ 55^0-sqrt(2)sin65^0\ is- a. 1 b. 1/(sqrt(2)) c. sqrt(2) d. zero

The value of cos^(2)20^(@)sin^(2)100^(@)+cos20^(@)cos100^(@) is -

If cos20^(@)+2sin^(2)55^(@)=1+sqrt(2)sinK^(@), K in (0, 90)," then "K=

sin65^(@)+cos65^(@)=sqrt(2)cos20^(@)