Question

Type the correct answer in the box.Use numerals instead of words. If necessary, use / for the fraction bar.AABC is a right triangle in which ZB is a right angle, AB= 1, AC=2, and BC= √3.cos Cx sin A =10tum. All rights reserved.ResetNext60°B

Answer 1

According to the length of each side, this triangle satisfies the Pitagoras Theorem, therefore is a rectangle triangle, look

`2^2=(√(3)\text{ })^2+1^2`

Now

`cos(C)=(√(3))/(2),\text{ }sin(A)=(√(3))/(2)\text{ }\Rightarrow cos(C)* sin(A)=((√(3))/(2))^2=(3)/(4)`

The answer is 3/4.