Question

If sin A= 0.29, cos A= 0.96, sin B= 0.42, and cos B= 0.91, what is sin(A+B)?
a) 0.67
b) 1.00
c) -0.14
d) 0.71

Answer 1

Answer:

The answer is A.

Step-by-step explanation:

Using the formula, sin(A+B) = sinAcosB + cosA sinB :

sin(A+B) = (0.29×0.91) + (0.96×0.42)

= 0.2639 + 0.4032

= 0.67 (2.dp)