cos^2 20+sin20 cos70+tan34÷cot56
Answers
Answered by
0
Answer:
2.482560969 is the final answer
Answered by
3
Answer:
2
Step-by-step explanation:
cos²20⁰ + sin 20⁰ × cos 70⁰ + tan 34⁰ ÷ cot 56⁰
=cos² 20⁰ + sin 20 × cos ( 90⁰ - 20⁰ ) + tan 34⁰ × tan 56⁰
=cos²20⁰ + sin20⁰ × sin20⁰ + tan34⁰ × tan56⁰
=cos²20⁰ + sin²20⁰ + tan34⁰ × tan 56⁰
{cos²a + sin²a = 1 }
=1 + tan34⁰ × tan ( 90⁰- 34⁰)
=1 + tan 34⁰ × cot 34⁰
=1 + tan 34⁰ × 1/ tan34⁰
=1+1
=2//
hope u understood
please follow me
&
please mark me as brainliest
Similar questions