Question

In the figure <B =90°, <C = x°,<A= y°
a) What is x+y
b) Prove that sin x°= cos y°
If sin x=cos x, find the value of 'x'
frnds pls make fast urgently ​

Answer 1

b) prove that sin x0=cos y0

If sin x=cos x ,find the value of 'x'

frnds pls make fast urgently

Answer 2

Step-by-step explanation:

a. In a triangle sum of all angles =180

A+B+C=180

x+90+y=180

x+y=180-90=90° and x=90-y......(1)

b. sin x=sin (90-y) we know that sin (90-y)=cosy

so sin x= cos y

c. sin x=cos x the principal solution of this eq is x=45°

cos 45=1/square root of 2 =sin 45