Question

Brainly by brain

Evaluate sin 60° cos 30° + sin 30°cos 60°. What is the value of sin(60° + 30°). What can you conclude?

Answer 1

sin(90°) = 1
Now,
sin90 = sin (60+30)
And by the formula of
sin(A+B) = sin A cos B + cos A sin B

We see that,
sin60cos30+sin30cos60 = sin(30+60) = sin 90 = 1

Answer 2

Answer:

Sin60*cos(90-60)+sin30.cos(90-30)

Sin60*sin60+sin30*sin30

Sin²60+sin²30

{√3/2}²+1/4

3/4+1/4

(3+1)/4

4/4

=1

Step-by-step explanation: