Question

(1-sin45°+sin30°)(1+4cos45°+cos60°)

Answer 1

Answer:

Step-by-step explanation:

(1- sin45 + sin 30 )(1+ cos45 + cos60)

( 1- 1√2 + 1/2 ) ( 1+ 1/√2 + 1/2)

( 1/2 - 1/√2) ( 3/2 + 1/√2)

(1-√2 / 2)(3+√2/2)

(1-√2)(3+√2)/4

7/4