Suppose `alpha,betaa n dtheta` are angles satisfying `0

If alpha and beta are two positive acute angles satisfying alpha-beta=15^(@) and sin alpha=cos2 beta then the value of alpha+beta

If alpha and beta are two positive acute angles satisfying alpha-beta=15^(@) and sin alpha=cos2 beta then find the value of alpha+beta

If alpha and beta are two positive acute angles satisfying alpha-beta=15^(@) and sin alpha=cos2 beta then the value of alpha+beta is equal to -(A)35^(@) (B) 55^(@) (C) 65^(@) (D) 85^(@)

vec u , vec va n d vec w are three non-coplanar unit vecrtors anf alpha,betaa n dgamma are the angles between vec ua n d vec v , vec va n d vec w ,a n d vec wa n d vec u , respectively, and vec x , vec ya n d vec z are unit vectors along the bisectors of the angles alpha,betaa n dgamma , respectively. Prove that [ vec xxx vec y vec yxx vec z vec zxx vec x]=1/(16)[ vec u vec v vec w]^2sec^2alpha/2sec^2beta/2sec^2gamma/2dot

If hat a , hat b ,a n d hat c are three unit vectors, such that hat a+ hat b+ hat c is also a unit vector and theta_1,theta_2a n dtheta_3 are angles between the vectors hat a , hat b ; hat b , hat ca n d hat c , hat a respectively, then among theta_1,theta_2,a n dtheta_3dot a. all are acute angles b. all are right angles c. at least one is obtuse angle d. none of these

If the angles alpha, beta, gamma of a triangle satisfy the relation, sin((alpha-beta)/(2)) + sin ((alpha -gamma)/(2)) + sin((3alpha)/(2)) = (3)/(2) , then The measure of the smallest angle of the triangle is

If the angles alpha, beta, gamma of a triangle satisfy the relation, sin((alpha-beta)/(2)) + sin ((alpha -gamma)/(2)) + sin((3alpha)/(2)) = (3)/(2) , then Triangle is

alphaand beta are the positive acute angles and satisfying equation 5sin2 beta=3sin2 alpha andtan beta=3tan alpha simultaneously.Then the value of tan alpha+tan beta is