Math, asked by sakshipatil1305, 5 months ago

Evaluate
5cos²60°+4cos²30°-tan²45°/²30°+ cos²60° .

Answers

Answered by xcristianox
6

5cos² 60⁰ + 4cos² 30⁰ - tan² 45⁰/sin² 30⁰ + cos ² 60²

4cos² 60⁰ + cos ² 60² + 4cos² 30⁰ - tan² 45⁰/sin² 30⁰ + cos ² 3600

4cos² 60⁰  + 4cos² 30⁰ - tan² 45⁰/sin² 30⁰ + cos ² 3600 + cos ² 60°

4cos² 60⁰  + 4sin² 60⁰ - tan² 45⁰/sin² 30⁰ + cos ² 3600 + cos ² 60

4(cos² 60⁰+sin² 60⁰)  -  1/sin² 30⁰ + 1 +cos ² 60 (cos ² 3600=1)

4-1/sin² 30⁰ + 1 +cos ² 60   (cos² 60⁰+sin² 60⁰=1)

4- 1/sin² 30⁰ +1+ sin ²30     (tan45°=1)

4-1/(0.5)²+1+ (0.5)²  (sin30°=0.5)

4-4+1+(0.25)

1.25

Answered by Anonymous
12

Step-by-step explanation:

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