Question #950a6 Trigonometry Right Triangles Relating Trigonometric Functions 1 Answer P dilip_k Feb 22, 2017 #I=44sin(theta)+44sin(theta+pi/14)# Using formula #sinC+sinD=2sin((C+D)/2)cos((C-D)/2)# #=>I=44(sin(theta)+sin(theta+pi/14))# #=>I=44*2sin(theta+pi/28)cos(pi/28)# #=>I=88cos(pi/28)sin(theta+pi/28)# #=>I=Rsin(theta+a)# Where #R=88cos(pi/28) and a= pi/28# Answer link Related questions What does it mean to find the sign of a trigonometric function and how do you find it? What are the reciprocal identities of trigonometric functions? What are the quotient identities for a trigonometric functions? What are the cofunction identities and reflection properties for trigonometric functions? What is the pythagorean identity? If #sec theta = 4#, how do you use the reciprocal identity to find #cos theta#? How do you find the domain and range of sine, cosine, and tangent? What quadrant does #cot 325^@# lie in and what is the sign? How do you use use quotient identities to explain why the tangent and cotangent function have... How do you show that #1+tan^2 theta = sec ^2 theta#? See all questions in Relating Trigonometric Functions Impact of this question 1237 views around the world You can reuse this answer Creative Commons License