[a cos2 theta+b sin2 theta" wi मान जात कोजिए जबरिक : "],[tan theta=(b)/(a)]

If 32sin^(6)theta=10-15cos2 theta+b cos4 theta+a cos6 theta ,show that tan theta tan5 theta=(a+b-5)/(a-b+7)

If tan theta=b, then cos2 theta+b sin2 theta=

If x=a cos theta + b sin theta and y=a sin theta - b cos theta. then a ^(2) +b^(2) is equal to

If x=a cos theta + b sin theta and y=a sin theta - b cos theta. then a ^(2) +b^(2) is equal to

If theta_(1) and theta_(2) are two solutions of the equation a cos2 theta+b sin2 theta=c then tan theta_(1)+tan theta_(2)

If theta_(1) and theta_(2) are two solutions of the equation a cos2 theta+b sin2 theta=c then tan theta_(1)+tan theta_(2)

If a^(2)(1- sin theta) +b^(2)(1+ sin theta)= 2 ab cos theta then show that 2tan theta=(a)/(b)-(a)/(a)

If a cos theta + b sin theta =4 and a sin theta- b cos theta = 3 " then" a^(2) + b^(2) is equal to

If a cos theta+b sin tan theta=3 and a sin theta-b cos theta=4, then a^(2)+b^(2) has the value

Prove that , a cos theta + b sin theta = sqrt(a^(2) +b^(2) ) cos ( theta - tan ^(-1) ""(b)/(a) ) =sqrt(a^(2) +b^(2)) sin (theta +tan ^(-1)""(a)/(b))