Easy Tutorial
For Competitive Exams

sin (90° – A) and cos A are:

Different
Same
Not related
None of the above
Explanation:

By trigonometry identities.

Sin (90°-A) = cos A {since 90°-A comes in the first quadrant of unit circle}

Additional Questions

If cos X = $\dfrac{2}{3}$ then tan X is equal to:

Answer

If cos X = $\dfrac{a}{b}$, then sin X is equal to:

Answer

The value of sin 60° cos 30° + sin 30° cos 60° is:

Answer

$\dfrac{2 tan 30°}{(1 + tan^{2}30°)}$ =

Answer

sin 2A = 2 sin A is true when A =

Answer

In $\triangle$ ABC, right-angled at B, AB = 24 cm, BC = 7 cm. The value of tan C is:

Answer

(Sin 30°+cos 60°)-(sin 60° + cos 30°) is equal to:

Answer

The value of $\dfrac{tan 60°}{cot 30°}$ is equal to:

Answer

1 – $cos^{2}$A is equal to:

Answer

sin (90° – A) and cos A are:

Answer
Share with Friends
Privacy Copyright Contact Us