Question

There are some changes is earlier question...it is wrong.... the new question is given below...we have to find 3sin^2 45 + 2cos^2 60 = how many ...without using trigonometric value table

Answer 1

Step-by-step explanation:

sin 45 is1/√2

cos 60 is 1/2

3sin^2 45 + 2cos^2 60= 3(1/√2)^2+2(1/2)^2

=3/2+1/2

4/2

=2