Question

what is the value of sin(780°)+cos(150°).... pls explain in in steps....... ​

Answer 1

Answer:

0

Step-by-step explanation:

sin 780⁰ + cos 150⁰

sin(2(360)+60⁰) + cos(180-30⁰)

sin 60⁰+(-cos 30⁰)

root3/2 ‐ root3/2

= 0

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