Question

Evaluate (cos 0ﹾ +sin 45ﹾ +sin 30ﹾ) (sin 90ﹾ - cos 45ﹾ + cos 60ﹾ) *

Answer 1

Answer:

7/4

Step-by-step explanation:

(1+ 1/√2 + ½) * ( 1- 1/√2 + ½)

= (3/2 + 1/√2)(3/2 - 1/√2)

= (9/4 - ½)

= 7/4

formula used: (a+b)(a-b) = (a²-b²)

i hope this helps u