 Hi and welcome to the session. I am Asha and I am going to help you with the following problem which says find the value of sin 75 degree. Let us now begin with the solution and we have to find the value of sin 75 degree which can be written as sin 45 degree plus 30 degree. Now the formula of sin A plus B is equal to sin A into cos B plus cos A sin B. Therefore applying this formula on this equation this can further be written as here A is 45 degree and B is 30 degree. So it can further be written as sin 45 degree into cos 30 degree plus cos 45 degree into sin 30 degree. Now sin 45 degree is 1 upon root 2 cos 30 degree is root 3 upon 2 plus cos 45 degree is 1 upon root 2 and sin 30 degree is 1 upon 2. So this is further equal to root 3 upon 2 root 2 plus 1 upon 2 root 2 which is further equal to root 3 plus 1 upon 2 root 2. Hence the value of sin 75 degree is equal to root 3 plus 1 upon 2 root 2. So this completes the session. Hope you enjoyed it. Take care and have a good day.