7) use An addition or substraction Formula to find the exact value of the Expressions, as demonstrated in Example 1 sin ( 2250 ) 8) Write the trigonometric Expression in the terms of sine and cosine, and the Simplify (SCAl - bot (x ) (sci ( x ) - cot(x ) = 9 ) Find all solutions of the given equation IEnter your answers as a comma- seperated list. Let k be any integer . Round terms to two decimal places 2 Cosco) - 12 = 0 O = rad. 10) Solve the given equation 6 sin (20) - 2 Sin (81 = 0 with K( Integer) Round terms to three decimal places