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" 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

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

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

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

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

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

Exact value of cos73^(@)+cos^(2)47^(@)-sin^(2)43^(@)+sin^(2)107^(@) is equal to: