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