In right triangle ABC, angleC is a right angle and sin A = sin B. What is m angle A?

A. 30
B. 45°
C. 60°
D. 75°

A=45°

Step-by-step explanation:

soln:

given,

ABC is a right angled triangle where C is right angle

i.e. C=90°

sin A= sin B=x(let)

A=?

we know,

A+B+C=180°[°•°sum of angles of a triangle]

or, x+x+90°=180°

or,2x=90°

•°•x=45°

hence,A=45°

the size of the resulting matrix is 1-by-3.

step-by-step explanation:

the size of the two matrices given are as follows:

no .of rows of matrix 1 = 1

no .of columns of matrix 1 = 3

no .of rows of matrix 1 = 3

no .of columns of matrix 1 = 3

to find the size of the resulting matrix without actually solving the multiplication of the matrix, this is what you do:

if resulting matrix = matrix 1 * matrix 2

no. of rows of the resulting matrix = number of rows of matrix 1

no. of columns of resulting matrix = number of columns of matrix 2

note: the order of the matrices matter!