Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\sin^{2}30^{\circ}+\cos^{2}30^{\circ}$$

Answer

1

Solution


Remove parentheses.
\[\sin^{2}(30deg)+\cos^{2}(30deg)\]
Use Pythagorean Identities: \(\sin^{2}x+\cos^{2}x=1\).
\[1\]
[email protected]
Privacy Policy | Terms & Conditions
Contact Us