Question

Find the value of
(cos 0° + sin 45°+ sin 30°) (sin 90° – cos 45° + cos 60°)

Answer 1

Answer:

Explanation:

Cos 0 =1 etc

Putting in their values , we get,

(1+1/√2 + 1/2)(1-1√2+1/2) l. C. M:

(2+√2 + 1)whole divided by 2 (2-√2+1) whole by 2

(3+√2)/2 (3-√2)/2

(9-2)/4. (A square - b square = (a-b) (a+b)

7/4

1.75