Question

(cos0+sin45+sin30) (sin90-cos45+cos60)​

Answer 1

Answer:

(1 + 1/√2+1/2) ( 1- 1/√2 + 1/2)

= 3/2 square - 1/√2 square

= 7/ 4

Answer 2

Answer:

7/4

Step-by-step explanation:

solution:

(cos0+ sin45+sin30)(sin90-cos45+cos60)

use their value now..

(1+1/✓2+1/2)(1-1/✓2+1/2)

now take the L.C.M

((2✓2+2+✓2)/2✓2)((2✓2-2+✓2)/2✓2)

then simplify them

((3✓2+2)/2✓2)*((3✓2-2)/2✓2)

((3✓2)² - (2)² )/(2✓2*2✓2)

(18-4)/8

14/8

7/4

hence the required value is 7/4