Question

sin 90 degree + cos 60 degree + cos 45 degree multiply sin 30 degree - cos 0 degree + cos 45 degree

Answer 1

sin 90 +cos60+cos45×sin30-cos0+cos45 =
3+√2/2 ×1-√2/2

Answer 2

Answer:

Step-by-step explanation:

So,

1+1/2+1/√2*√3/2-1+1/√2

3/2+√3/2√2-√2+1/√2

Take lcm as 2√2

3√2/2√2+√3/2√2-(√2+1)2/2√2

3√2+√3-2√2-2 whole divided by 2√2

√2+√3-2 whole divided by 2√2

Conjugate the denominator

√2+√3-2/2√2* numerator and denominator multiply by 2√2

We will get

4+2√6-4√2/8

C

We can write √6 as3√2......

4+3√2-4√2 whole by8

4-√2whole by 8 is the answer