Question

if cos (45° + x )= sin 30° find x = ?​

Answer 1

Step-by-step explanation:

if cos (45° + x )= sin 30° find x = ?

Answer 2

The value of x is 15°.

Given:

cos (45° + x )= sin 30°

To Find:

The value of x.

Solution:

To find the value of x we will follow the following steps:

As we know,

$cos (45° + x )= sin 30°$

So,

$cos (45° + x )= cos(90 - 30)$

Now,

The angle of cos is the same on both sides.

So,

$45 + x = 90 - 30$

$x = 60 - 45 = 15$

Henceforth, The value of x is 15°.

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