How do you calculate sin30 + csc90? Trigonometry Right Triangles Trigonometric Functions of Any Angle 1 Answer Azhar A. Jun 17, 2015 The answer will be #3/2# Explanation: We know that: #Sin 30 = 1/2# #Csc 90 = 1# #1/2 + 1# #= (1 + 2) / 2# (By Cross Multiplication Rule) # = 3/2# Answer link Related questions How do you find the trigonometric functions of any angle? What is the reference angle? How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle? What is the reference angle for #140^\circ#? How do you find the value of #cot 300^@#? What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find #sin210cos330-tan 135#? How do you know if #sin 30 = sin 150#? How do you show that #(costheta)(sectheta) = 1# if #theta=pi/4#? See all questions in Trigonometric Functions of Any Angle Impact of this question 1524 views around the world You can reuse this answer Creative Commons License