bambamjojojoneoxetct bambamjojojoneoxetct

03-05-2018
Mathematics

contestada

What is the value of x?
sin(x+21)°=cos(2x+21)°

Respuesta :

calculista calculista

17-05-2018

we know that
if sin A=cos B
then
angle A and angle B are complementary angles
so
A+B=90°

in this problem
(x+21)+(2x+21)=90-------> 3x+42=90-------> 3x=48-----> x=16°

Answer Link

Otras preguntas

Jane watched one television program for 1/4 of an hour and then changed channels to watch another program for 20 min. Write an equation to describe the fraction

what is the time interval between the release of the ball and the time it reaches its maximum hieght? the acceleration gravity is 9.81m/s^2 and the maximum heig

How do I graph f(x)= -cos(x-pi)?

Questions 1. Calculate the molar mass of an element. 2. Calculate the molar mass of a compound. 3. How do you determine the number of protons, electrons and neu

why did some chiefs decide to fight when english colonists moved into their territory?plz help me

In class 6, 80percent of the children like crisps. 75percent of the children who like crisps also like chocolate. In class 6 what percentage of the children lik

how many valenceelectrons does rare earth metals have

what would happen if the chromosome number were not reduced before sexual reproduction?

There are 21 males in the algebra 1 class. If 75% is female, how many students are there in the class?

how do i persuade students to enter the school talent show? i have to write it as an article in the school magazine.