COS 45
sec 30 + cosec 30
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Answer:
VALUE OF COS45
(SEC30+COSEC30
=√6(√3-1
8
value of cos45
(sec30+cosec30
=1/√2
2/√3+2
=1/√2
2+2√3
√3
=2/√2×√3
2(1+√3)
=√2
√2×√2. × √3×(√3-1)
2(√3+1)(√3-1)
=√6(√3-1)
4({[(√3)cube-1square
√6(√3-1)
4(3-1)
√6(√3-1)
8
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