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

What are the solutions of the following? 2x2 + 26x + 80 Your answer: {5,8} {-5,-8} {4,10} {-4, -10}

please help!! determine an equation ( ax^3 * bx^2 + cx + d ) for the data.

12. (07.06 LC) A library building is in the shape of a rectangle. Its floor has a length of (3x + 5) meters and a width of (5x − 1) meters. The expression below

what is 3*5/2 A.5/6 B.15/2 C.8/2 D.15/6

Thank you in advance

I am needing help with this question can anyone help me!!

Duncan is taking notes on Karin Slaughter’s interview about writing. I think, really, what makes thrillers work is that they have to have a beginning, a middle

Hypothesis that can be tested through experimentation?

A rule is or principle that describes what happens in nature is called law

55) Louis started a simple interest savings account with $1500 that earned 3.5% interest. He left the account untouched until some 55) Louis started a simi time