What is the product written in scientific notation? (1.18×103)·(9.1×10−6) 1.0738×10−2 1.0738×10−4 10.738×10−3 10.738×10−2

We have been given the product

First of all we multiply 1.18 and 9.1. On multiplying, we get

Now, we multiply

Using the exponent property , we get

Therefore, we have the product

In scientific notation the product is

A is the correct option.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92