Question

pls ans
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Answer 1

Answer:

(C) 90°

Step-by-step explanation:

sinx = cosy

x = y = 45°

x + y = 45 + 45 = 90

Answer 2

Step-by-step explanation:

Given:

$\rightarrowtail \bold{sinx = cosy}$

To find:

$\rightarrowtail \bold{x+y}$

Solution:

• ∵ cosФ = sin(90° - Ф)

$\rightarrowtail \bold{sinx=sin(90^{0}-y)}$

• sin and sin get cancelled

$\mapsto \bold{x=90^{0}-y}$

$\twoheadrightarrow \bold{x+y=90^{0}}$

• ∴ 90° is the value of x + y.