Math, asked by srivaniakhil, 1 year ago

Evaluate 5cos²60+4cos²30-tan²45/sin²30+cos²60

Answers

Answered by ysreedurgap2mxkf
4
5(1/4)+4(3/4)-1/1/4+3/4
5/4+12/4-1/4/4
13/4
So tje value of the above equationis 13/4
Answered by xcristianox
8

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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