" Q."12" if "a=sin170^(@)+cos170^(@)" then "

36.If a=sin170^(@)+cos170^(@) then

If a sin 170+cos170, then

Which one of the following is the value of cos 170^@ cos 10^@ - sin 170^@ sin 10^@

Statement-1: cos10^(@)+cos20^(@)+…..+cos170^(@)=0 Statement-2: cos alpha+cos(alpha+beta)+....+cos(alpha+(n-1)beta)=(cos(alpha+((n-1)beta)/(2))sin((nbeta)/(2)))/(sin((beta)/(2))), beta ne 2npi.

Statement-1: cos10^(@)+cos20^(@)+…..+cos170^(@)=0 Statement-2: cos alpha+cos(alpha+beta)+....+cos(alpha+(n-1)beta)=(cos(alpha+((n-1)beta)/(2))sin((nbeta)/(2)))/(sin((beta)/(2))), beta ne 2npi.

If an interior of a regular poly gon is 170^(@) ,then the number of sides of the polygon is

cos170^(@)cos150^(@)cos130^(@)cos110^(@)=

For the reaction between CO_2 and graphite CO_2(g)+C(s)rarr 2CO(g) , DeltaH=+170KJ and Delta S=170JK^(-1) the reaction is spontaneous at

If 117 Cos^2 A+129 Sin^2 A=120 and 170 Cos^2 B+158 Sin^2 B=161 , then the value of Cosec^2 A Sec^2 B is: यदि 117 Cos^2 A+129 Sin^2 A=120 तथा 170 Cos^2 B+158 Sin^2 B=161 , है, तो Cosec^2 A Sec^2 B का मान क्या होगा ?